CN102484339A

CN102484339A - Direct Current Outlet

Info

Publication number: CN102484339A
Application number: CN2010800348522A
Authority: CN
Inventors: 加藤一祐; 滝井利之; 川本隆司; 近藤真树; 上野哲
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2009-08-07
Filing date: 2010-08-03
Publication date: 2012-05-30
Also published as: TWI424636B; WO2011015927A1; TW201117497A

Abstract

A direct current (DC) outlet supplies a DC power to the plug connected thereto. The DC outlet includes an outlet main body having an outlet unit to which the plug is adapted to be connected, the outlet unit being provided in a front surface of the outlet main body. Further, the outlet unit includes an insertion groove formed into a generally rectangular shape viewed from the front and to which the surrounding wall inserted; and a generally rectangular shaped plug-receiving portion surrounded by the insertion groove. The plug-receiving portion includes a plurality of circular pin insertion holes arranged along a reference side and the outlet main body receives pin- receiving pieces connected to the plug pins,- terminals electrically connected to the pin- receiving pieces; and lock springs adapted to press electric wires for supplying DC power against the terminals.

Description

The direct current socket

Technical field

The present invention relates to a kind of direct current socket, it comprises the socket that possesses socket unit, via said socket unit direct current power is supplied to plug.

Background technology

In the convention, a kind of alternating current (AC) socket is provided, the plug that is used for being connected to said AC outlet via removable formula with electric driving electric (alternating electromotive force) is supplied to electric installation (such as, personal computer and phone) (for example, referring to JP5-207626A).In this AC outlet, the direction that two pins that two plug base pins are inserted into AC outlet is not inserted in the hole applies restriction.Therefore, plug can be easy to be inserted in the AC outlet.

Simultaneously, most of electric installations utilize direct current (DC) electric power as its driving electric.For this reason, the AC-DC transducer alternating electromotive force that will exchange the electrical socket supply certainly converts DC electric power to and then it is fed into electric installation.When the AC-DC transducer converted alternating electromotive force to DC electric power, power loss can appear.

In the process of making great efforts anti-power loss here, known a kind of DC socket (for example, referring to JP7-15835A) that is used for DC is supplied power to electric installation.The use of DC socket makes it possible to omit script and is arranged at the AC-DC transducer between DC socket and the electric installation.Two kinds of plugs that can be used for this DC socket known in the state of the art, a kind of have single plug base pin (as disclosed among the JP7-15835A), and another kind has two plug base pins in accordance with the IEC standard.

In the plug with two plug base pins, plug base pin is divided into positive pin and negative pin.Correspondingly, DC socket possesses positive pin patchhole that inserts positive pin and the negative pin patchhole that inserts negative pin.With regard to the structure of two plug base pins and two patchholes, negative pin inserts in the hole and bear pin and is inserted into positive pin insert in the hole (that is, oppositely insertion takes place) situation for positive pin is inserted into sometimes.Take this situation into account, DC socket possesses the structure that is used to prevent reverse insertion.

As comparing with AC outlet, in DC socket following situation might appear: if during electric power is carried, remove plug from DC socket, then continue to produce electric arc between DC socket and the plug.Cannot see electric arc for making from the plug outside, plug possesses the encirclement wall that is used for externally hiding plug base pin.As instance, there is a kind of available DC socket of abideing by the IEC standard with the DC socket that surrounds wall and two plug base pins.

Referring to Figure 48 A and Figure 48 B, will describe the DC socket and the plug of abideing by the IEC standard.

As illustrating among Figure 48 A, plug 100 comprises and is used for two cylindrical encirclement walls 102 that just reaching negative plug base pin 101 (referring to Figure 48 B) and be used for externally hiding plug base pin 101 that the socket unit 110 with DC socket electrically connects.Outstanding downwards rib 103 vertically is arranged in the upper part that surrounds wall 102.Plug base pin 101 is arranged in the position identical with the center C R1 that surrounds wall 102 and spaced apart with center C R1 in the horizontal direction in vertical direction.

As illustrated among Figure 48 B, socket unit 110 comprises insertion groove 111 that is inserted with encirclement wall 102 and the plug receiving portion 112 that is surrounded by insertion groove 111.Insert groove 111 be formed tubular shape (as on the direction of insertion of plug 100 in the being seen plane graph).Rib inserts groove 113 (wherein being inserted with the rib 103 of plug 100) and vertically is arranged in the upper part of inserting groove 111.

In plug receiving portion 112, form two pin patchholes 114, the plug base pin 101 of plug 100 is inserted in said two pin patchholes 114.Pin patchhole 114 is arranged in the position identical with the center C R2 that inserts groove 111 and spaced apart with center C R2 in the horizontal direction in vertical direction.

By under following state, plug 100 being inserted into socket unit 110 and plug 100 is connected to each other with socket unit 110: plug base pin 101 is aimed at, is surrounded wall 102 with pin patchhole 114 and aims at inserting groove 111, and rib 103 is aimed at rib insertion groove 113.

For avoiding plug 100 oppositely to be inserted in the socket unit 110, plug 100 need insert under the situation that groove 113 aims at the rib 103 of plug 100 and the rib of socket unit 110 and be inserted into socket unit 110.In other words, the user was arranged at the position of the rib 103 in the encirclement wall 102 of plug 100 with visual confirmation after, the user must insert groove 113 with rib 103 and rib and aim at.Therefore, plug 100 being inserted in the socket unit 110 of task becomes loaded down with trivial details and effort.

As being used to prevent reverse another socket that inserts, can expect using following structure, wherein, replace omitting rib 103, depart from vertical direction in the position of the heart among the plug receiving portion that pin patchhole (shown in Figure 49 A) being set.More specifically say it, shown in Figure 49 A, socket unit 200 possess and have tubular shape (as the direction of insertion at plug in the being seen plane graph) insertion groove 201.Two pin patchholes 203 are arranged at the upside place by the center C R3 of the circular plug receiving portion 202 that inserts groove 201 encirclements.

Yet the horizontal width of plug receiving portion 202 is along with it diminishes away from center C R3 in vertical direction gradually.Therefore, the distance B R1 that is used for connecting two pin patchholes 203 diminishes.Therefore, the distance that is inserted between the plug base pin (not shown) of the plug in the pin patchhole 203 reduces.This situation causes the problem of the dielectric strength (dielectric strength) that reduces plug base pin.

As solution to this problem, can expect using following structure, wherein, as illustrated among Figure 49 B, footpath DR2 increases the size of plug receiving portion 112 outside this insertion groove 201 by increasing.This situation makes it possible to increase by two distance B R5 (making DR5 become greater than DR1) between the pin patchhole 203.

Yet the increase of the size of plug receiving portion 202 causes the increase of the size of socket unit 200.Therefore; The footpath one of can not be dropped on nearly in three modules in person's the size (hereinafter is called " single module size ") outside the socket unit 110, and said three modules are abideed by Japanese Industrial Standards (referring to JIS C 8303) in size and can be attached to the fixed frame (referring to JIS C 8375) of the interchangeable connecton layout of big square hub type (large-square-boss-type interchangeable wiring device) shoulder to shoulder.Therefore, must use the fixed frame that is exclusively used in socket unit 200.Can be attached to can not the attached framework of dedicated fixed so far in accordance with the connecton layout of the fixed frame of Japanese Industrial Standards.This situation causes that connecton layout and socket unit can not be attached to the problem of common fixed frame together.

In addition, DC socket can have following structure, wherein, the rectangular through hole of pin patchhole but not the form of manhole, the flat pins of plug (flat pin) (not shown) can be inserted in the said rectangular through-hole.

More specifically say it, shown in Figure 50 A, socket unit 300 possess and have the general rectangular shape (as the direction of insertion at plug in the being seen plane graph) insertion groove 301.Two pin patchholes 303 are arranged at the upside place (wherein this center C R4 representes two intersection of diagonal at four angles of attachment plug receiving portion 302) by heart CR4 among on the vertical direction of inserting the plug receiving portion 302 that groove 301 surrounds.Pin patchhole 303 forms the rectangular shape that extend in vertical direction on long limit.

Under forming with the situation with cross-sectional area identical with the cross-sectional area of plug base pin, the vertical dimension of flat pins becomes greater than the vertical dimension of plug base pin in flat pins.Therefore, pin patchhole 303 is through forming to extend to long distance in vertical direction.More specifically say it, end parts extends beyond center C R4 downwards under the pin patchhole 303.Therefore, if plug oppositely is inserted in the socket unit 300, then flat pins partly gets in the pin patchhole 303 and can contact with the pin female part (not shown) of socket unit 300.

Given this, can expect to use following structure, wherein, as illustrating among Figure 50 B, insert dimension D R3 and DR4 outside the groove 301 make plug receiving portion 302 greater than the outside dimension of the insertions groove of explaining among Figure 50 A 301 size increase by making.Therefore, the entire portion of pin patchhole 303 is positioned side place on the center C R4 in vertical direction, and this makes it possible to prevent reverse insertion.Yet this causes that the increase of the size of plug receiving portion 302 causes the problem of increase of the size of socket unit 300.

In addition, the convention DC socket that has an encirclement wall identical with the encirclements wall of the DC socket of abideing by the IEC standard does not have the terminal that can allow the user easily to carry out to be established in the DC socket or pin female part and is used for supplying the structure that is connected between the electric wire of DC electric power via it.

Summary of the invention

In view of foregoing, the present invention provides a kind of direct current (DC) socket, and it possesses a kind of structure, saidly is configured to prevent reverse easy connection the between electric wire and terminal or the pin female part of inserting and can avoid size to increase permitting simultaneously.

First aspect according to the present invention provides a kind of direct current (DC) socket, and plug is suitable for being connected to said direct current socket comprise the DC supply of electric power for said plug, said plug to have a plug base pin more than the circular bar shape; And be used to surround the encirclement wall of the quadrangle form in fact of said plug base pin.Said DC socket comprises the socket main body with socket unit, and plug is suitable for being connected to socket unit, and said socket unit is arranged in the front of socket main body.

In addition, said socket unit comprises: insert groove, it forms general rectangular shape (in the plane graph like finding on the direction of insertion at plug) and said encirclement wall inserts wherein; And the plug receiving portion, it is surrounded and is formed general rectangular shape (in the plane graph like finding on the direction of insertion at plug) by said insertion groove.In addition; Said plug receiving portion comprises: a plurality of circular pin patchholes; It arranges and plug base pin is inserted in wherein along the reference side of serving as the side in the perimeter sides of plug receptacle branchs, and the socket main body admittance is connected to the pin female part that is inserted into the plug base pin that pin inserts in the hole; Terminal, it is electrically connected to said pin female part; And the locking spring, it is suitable for the electric wire that is used to supply DC electric power is pressed in said terminal, and said electric wire inserts via being arranged at the electric wire insertion holes on the socket main body.

With regard to the present invention of preceding text statement, insert groove and have the general rectangular shape.Therefore, the situation that has tubular shape with the insertion groove is compared, and can limit the direction of insertion of the encirclement wall of plug.This makes the user can be easy to conclude the plug direction of insertion, increases the simplification of use by this.

In addition, the pin patchhole is arranged in certain position, and said position is nearer apart from the side relative with reference side on perpendicular to the vertical direction of reference side of plug receptacle branch apart from the reference side of extending along the arranged direction of pin patchhole of plug receptacle branch.Because this characteristic, can under the situation that need not the anti-reverse insert structure of other formation in the encirclements wall of the insertions groove of socket or plug, prevent that plug oppositely is inserted in the DC socket.Therefore, compare with the situation that in DC socket, forms anti-reverse insert structure in addition, becoming to prevent to increase the size of DC socket.

In addition, socket main body comprises electric wire insertion holes, and the electric wire that supply DC electric power is used is inserted in the said electric wire insertion holes.The locking spring is arranged in the inner space of socket main body so that electric wire is pressed on the terminal.Because this characteristic can use the elasticity of locking spring by terminal and locking spring electric wire to be clamped.This makes it possible to be easy to carry out being connected between electric wire and the terminal.

Second aspect according to the present invention provides a kind of direct current (DC) socket, and plug is suitable for being connected to said direct current socket comprise the DC supply of electric power for said plug, said plug to have a plug base pin more than the circular bar shape; And be used to surround the encirclement wall of the quadrangle form in fact of said plug base pin.Said DC socket comprises the socket main body with socket unit, and plug is suitable for being connected to socket unit, and said socket unit is arranged in the front of socket main body.In addition, said socket unit comprises: insert groove, it forms general rectangular shape (in the plane graph like finding on the direction of insertion at plug) and said encirclement wall inserts wherein; And the plug receiving portion, it is surrounded and is formed general rectangular shape (in the plane graph like finding on the direction of insertion at plug) by said insertion groove.

In addition; Said plug receiving portion comprises: a plurality of circular pin patchholes; Its reference side of a side along the perimeter sides of serving as plug receptacle branchs is arranged and plug base pin is inserted in wherein, and the socket main body admittance is connected to the pin female part that is inserted into the plug base pin that pin inserts in the hole; Terminal, it is electrically connected to said pin female part; And screw thread (screw) parts, it is installed on said terminal place and when tightening, is suitable for the electric wire that is used to supply DC electric power is pressed in said terminal, and said electric wire inserts via being arranged at the electric wire insertion holes on the socket main body.

With regard to the present invention of preceding text statement, insert groove and have the general rectangular shape.Therefore, the situation that has tubular shape with the insertion groove is compared, and can limit the direction of insertion of the encirclement wall of plug.This makes the user can be easy to conclude the plug direction of insertion, increases the simplification of use by this.In addition, the pin patchhole is arranged in certain position, and said position is nearer apart from the side relative with reference side on perpendicular to the vertical direction of reference side of plug receptacle branch apart from the reference side of extending along the arranged direction of pin patchhole of plug receptacle branch.

Because this characteristic, can under the situation that need not the anti-reverse insert structure of other formation in the encirclements wall of the insertions groove of socket or plug, prevent that plug oppositely is inserted in the DC socket.Therefore, compare with the situation that in DC socket, forms anti-reverse insert structure in addition, becoming to prevent to increase the size of DC socket.

In addition, by the thread up parts electric wire is pressed on the terminal body part.Therefore, be by (for example) soldering or welding and situation connected to one another is compared with terminal body part and electric wire, the user can be easy to carry out the task of coupling a wire to the terminal body part.

The third aspect according to the present invention provides a kind of direct current (DC) socket, and plug is suitable for being connected to said direct current socket comprise the DC supply of electric power for said plug, said plug to have a plug base pin more than the circular bar shape; And be used to surround the encirclement wall of the quadrangle form in fact of said plug base pin.Said DC socket comprises the socket main body with socket unit, and plug is suitable for being connected to socket unit, and said socket unit is arranged in the front of socket main body.In addition, said socket unit comprises: insert groove, it forms general rectangular shape (in the plane graph like finding on the direction of insertion at plug) and said encirclement wall inserts wherein; And the plug receiving portion, it is surrounded and is formed general rectangular shape (in the plane graph like finding on the direction of insertion at plug) by said insertion groove.

In addition; Said plug receiving portion comprises: a plurality of circular pin patchholes; Its reference side of a side along the perimeter sides of serving as plug receptacle branchs is arranged and plug base pin is inserted in wherein, and the socket main body admittance is connected to the pin female part that is inserted into the plug base pin that pin inserts in the hole; Terminal, it is electrically connected to said pin female part and part is exposed to outside the socket main body.

In addition, be wired to the part that is exposed to the socket main body outside of terminal, make and via terminal DC electric power to be supplied to the pin female part from electric wire.Because this characteristic, can be by the exposed portion that couples a wire to terminal via welding or soldering assign to carry out the reliably electric connection of electric wire and pin female part.

Description of drawings

Fig. 1 is the sketch map of total structure that illustrates the DC distribution system of the DC socket that possesses according to the present invention.

Fig. 2 A is the perspective view that illustrates the DC socket of first embodiment according to the present invention, and Fig. 2 B is its front view.

Fig. 3 A is the perspective view that illustrates the DC socket of first embodiment that is not attached to fixed frame as yet, and Fig. 3 B is the perspective view that illustrates the DC socket of first embodiment that is attached to fixed frame.

Fig. 4 illustrates the DC socket of first embodiment that is attached to fixed frame and the front view of plate.

Fig. 5 is the decomposition diagram that illustrates the DC socket of first embodiment.

Fig. 6 is the perspective view of structure that illustrates the DC socket of first embodiment.

Fig. 7 A is the profile of cross-sectional structure that illustrates the DC socket of first embodiment, and the electric wire that wherein is used for supplying DC electric power is not inserted into socket main body as yet, and Fig. 7 B illustrates the profile that electric wire is inserted into the cross-sectional structure in the socket main body.

Fig. 8 A is the profile of cross-sectional structure that illustrates the DC socket of first embodiment, and the electric wire that wherein is used for supplying DC electric power is inserted into socket main body, and Fig. 8 B is the profile that illustrates the cross-sectional structure of operation release-push.

Fig. 9 A is the perspective view that illustrates the plug in the DC socket that is inserted into first embodiment, and Fig. 9 B is its front view.

Figure 10 illustrates the DC socket of first embodiment and the perspective view of the relation of the insertion between the plug.

Figure 11 A is the profile of cross-sectional structure that illustrates DC socket and the plug of first embodiment, and wherein plug is not inserted in the socket as yet, and Figure 11 B illustrates the profile that plug is inserted into the cross-sectional structure in the socket.

Figure 12 is the front view that illustrates the plug in the DC socket that oppositely is inserted into first embodiment.

Figure 13 A to Figure 13 D illustrates the front view of shape with the different socket units of the DC socket of first embodiment of supply change in voltage.

Figure 14 A and Figure 14 B are the front view of different socket units that illustrates the DC socket of first embodiment that shape changes with the kind of supply of electric power circuit.

Figure 15 A to Figure 15 G is the front view that the DC socket that illustrates first embodiment is attached to the different instances of fixed frame.

Figure 16 A to Figure 16 D illustrates a group of socket unit of DC socket of first embodiment through revising the front view of instance.

Figure 17 A to Figure 17 D illustrates another group of socket unit of DC socket of first embodiment through revising the front view of instance.

Figure 18 illustrates another of socket unit of DC socket of first embodiment through revising front view of instance.

Figure 19 is the front view that illustrates the socket unit of relatively using DC socket.

Figure 20 A and Figure 20 B illustrate the front view that another relatively uses the socket unit of DC socket.

Figure 21 A is the plane graph that illustrates the DC socket of second embodiment according to the present invention, and Figure 21 B is its front view, and Figure 21 C is its end view, and Figure 21 D is its rearview.

Figure 22 is the decomposition diagram that illustrates the DC socket of second embodiment.

Figure 23 A is the profile along the line A-A intercepting among Figure 21 D; Illustrate the DC socket of second embodiment that is not connected with electric wire as yet; Figure 23 B is the profile along the line A-A intercepting among Figure 21 D; Illustrate the DC socket of second embodiment that is connected with electric wire, and Figure 23 C is the end view that illustrates the DC socket of second embodiment that is connected with electric wire.

Figure 24 A is the plane graph that illustrates the DC socket of the 3rd embodiment according to the present invention, and Figure 24 B is its front view, and Figure 24 C is its end view, and Figure 24 D is its rearview.

Figure 25 is the decomposition diagram that illustrates the DC socket of the 3rd embodiment.

Figure 26 A is the profile along the line B-B intercepting among Figure 24 D, illustrates the DC socket of the 3rd embodiment that is not connected with electric wire as yet, and Figure 26 B is the profile along the line B-B intercepting among Figure 24 D, illustrates the DC socket of the 3rd embodiment that is connected with electric wire.

Figure 27 A is the plane graph that illustrates the DC socket of the 4th embodiment according to the present invention, and Figure 27 B is its front view, and Figure 27 C is its end view, and Figure 27 D is its rearview.

Figure 28 is the decomposition diagram that illustrates the DC socket of the 4th embodiment.

Figure 29 A is the profile along the line C-C intercepting among Figure 27 D, illustrates the DC socket of the 4th embodiment that is not connected with electric wire as yet, and Figure 29 B is the profile along the line C-C intercepting among Figure 27 D, illustrates the DC socket of the 4th embodiment that is connected with electric wire.

Figure 30 A to Figure 30 D illustrates the difference of socket unit of DC socket of the 4th embodiment through revising the front view of instance.

Figure 31 A is the perspective view that the warp that illustrates the DC socket of the 4th embodiment is revised instance, and Figure 31 B is its front view.

Figure 32 A is the perspective view that illustrates the DC socket of the 5th embodiment according to the present invention, and Figure 32 B is its front view.

Figure 33 A is the perspective view that illustrates the DC socket of the 5th embodiment that is not attached to fixed frame as yet, and Figure 33 B is the perspective view that illustrates the DC socket of the 5th embodiment that is attached to fixed frame.

Figure 34 is the front view that illustrates the DC socket of the 5th embodiment that is attached to fixed frame.

Figure 35 is the decomposition diagram that illustrates the DC socket of the 5th embodiment.

Figure 36 A is the perspective view of structure that illustrates the DC socket of the 5th embodiment, and Figure 36 B is the end view of side structure that illustrates the DC socket of the 5th embodiment.

Figure 37 A is the perspective view that illustrates the plug in the DC socket that is inserted into the 5th embodiment, and Figure 37 B is its front view.

Figure 38 illustrates the DC socket of the 5th embodiment and the perspective view of the relation of the insertion between the plug.

Figure 39 A is the profile of cross-sectional structure that illustrates the DC socket of the 5th embodiment, and wherein plug is not inserted in the socket as yet, and Figure 39 B illustrates the profile that plug is inserted into the cross-sectional structure in the socket.

Figure 40 is the front view that illustrates the plug in the DC socket that oppositely is inserted into the 5th embodiment.

Figure 41 A to Figure 41 D illustrates the front view of shape with the different socket units of the DC socket of the 5th embodiment that changes of supply voltage.

Figure 42 A and Figure 42 B are the front view of different socket units that illustrates the DC socket of the 5th embodiment that shape changes with the kind of supply of electric power circuit.

Figure 43 A to Figure 43 D illustrates a group of socket unit of DC socket of the 5th embodiment through revising the front view of instance.

Figure 44 A to Figure 44 D illustrates another group of socket unit of DC socket of the 5th embodiment through revising the front view of instance.

Figure 45 illustrates another of socket unit of DC socket of the 5th embodiment through revising front view of instance.

Figure 46 A to Figure 46 C illustrates the front view of shape with the different socket units of the DC socket of first embodiment of supply of current variation.

Figure 47 A and Figure 47 B are the front view that illustrates the socket unit of convention DC socket.

Figure 48 A is for illustrating the front view of convention plug, and Figure 48 B is the front view that illustrates the socket unit of convention DC socket.

Figure 49 A and Figure 49 B are the front view that illustrates the socket unit of relatively using DC socket.

Figure 50 A and Figure 50 B illustrate the front view that another relatively uses the socket unit of DC socket.

Embodiment

Hereinafter, will come to describe in more detail the present invention's embodiment referring to accompanying drawing, accompanying drawing forms the present invention's a part.

The general aspect of direct current (DC) distribution system 70 that is arranged among the dwelling house H will be described referring to Fig. 1.

Referring to Fig. 1, be used for exporting the DC electric power supply unit 71 of DC electric power and receive the electric installation 72 of DC driven by power to be arranged at dwelling house H as load.DC electric power is supplied to electric installation 72 via DC supply line Wdc, and DC supply line Wdc is connected to the lead-out terminal of DC electric power supply unit 71.Thus; The instance of electric installation 72 comprise massaging device 72a (such as; Personal computer and fellow thereof), lighting device 72b, positive door system (front door system) device 72c (such as; House phone and fellow thereof) and household safe device 72d (such as, fiery transducer and fellow thereof).

Between DC electric power supply unit 71 and electric installation 72; DC circuit breaker 73 is set, is used for monitor flows through the electric current of DC supply line Wdc and be used for when detecting trouble restriction or interrupt being supplied to from DC electric power supply unit 71 the DC electric power of electric installation 72 via DC supply line Wdc.72 one-tenth corresponding relations of DC circuit breaker 73 and electric installation are provided with.

Basically, DC electric power supply unit 71 produces DC electric power by execution from the conversion of the electric power (for example, commercial power) of the AC power AC supply of dwelling house H outside.More specifically say it, the alternating electromotive force of AC power AC is inputed to the AC-DC transducer 76 that comprises Switching Power Supply via the main circuit breaker 75 that is arranged in the distribution panelboard 74.Then, convert alternating electromotive force to DC electric power by AC-DC transducer 76.To be fed into each DC circuit breaker 73 from the DC electric power of AC-DC transducer 76 outputs via cooperation control unit (collaborative controlunit) 77.

In DC electric power supply unit 71, following each person is set: secondary cell 78a, it is in unregulated power (for example, during the power off periods (outage period) at AC power AC) work when exchanging power supply AC supply; And solar cell 78b or fuel cell 78c, be used to produce DC electric power.Secondary cell 78a, solar cell 78b and fuel cell 78c constitute the distributed power source 78 relative with main power source 79, and main power source 79 comprises and is used for from exchanging the AC-DC transducer 76 that power supply AC produces DC electric power.

The DC electric power of cooperation control unit 77 control automatic power supplies 79 supplies and the DC distribution of electrical power of self-dispersion type power supply 78 feed-ins.Cooperation control unit 77 possesses DC-DC transducer 77a.DC-DC transducer 77a is with voltage transitions to the voltage of wanting of the DC electric power of the voltage of the DC electric power of automatic power supply 79 supplies and 78 feed-ins of self-dispersion type power supply.With regard to the structure of preceding text statement, the DC electric power of main power source 79 and distributed power source 78 is carried out appropriate allocation and it is supplied to electric installation 72.

Thus, DC socket (hereinafter is called " socket 1 ") is arranged between each or the household electrical device not shown in the figures among the massaging device 72a in each and the electric installation 72 in the DC circuit breaker 73.Socket 1 is connected to each among the DC supply line Wdc.The plug 1C of each among the massaging device 72a (referring to Fig. 9 A, Fig. 9 B and Figure 10) is connected to socket 1, makes the DC electric power of DC electric power supply unit 71 can be supplied to each among the massaging device 72a.

First embodiment

To describe the DC socket of first embodiment according to the present invention referring to Fig. 2 to Figure 15, said DC socket is embodied as the DC socket in the wall part that is embedded in building at present.

At first referring to Fig. 2 to Fig. 4, will be to the structure of socket 1 and the structure that is used for socket 1 is mounted to installation frame 2 describe.

As illustrating among Fig. 2 A, socket 1 comprise the general rectangular solid shape socket 1A, be contained in interior pin female part 1B of socket 1A (referring to Figure 11 A and Figure 11 B) or the like.In the following description, plug 1C (referring to Figure 10) is known as " fore-and-aft direction " with respect to the direction of insertion of socket 1.In the plane graph like finding on fore-and-aft direction, the longitudinal direction of socket 1A is known as " horizontal direction ", and the Width of socket 1A is known as " vertical direction ".In addition, the side of placing plug 1C along fore-and-aft direction is known as " front side ", and is known as " rear side " along the side of fore-and-aft direction placement socket 1.Vertical direction is perpendicular to one another with horizontal direction.

Socket 1A comprises: substantially the box-like socket main body 10, its with the resin material ejection formation and on fore-and-aft direction its front side locate opening; And box-like lid 20 substantially, its with the resin material ejection formation and on fore-and-aft direction its rear side place opening.Socket 1A more comprises a pair of connecting frame 30, and said connecting frame 30 is attached at the appropriate location after lid 20 is mounted to socket main body 10.Connecting frame 30 forms by the pressed metal plate.Socket main body 10 and cover 20 and define the inner space that is used for holding pin female part 1B, terminal 1D, locking spring 1E and release-push 1F (it is illustrated in Fig. 5 all best).

Pin female part 1B is connected to from DC supply line Wdc (referring to Fig. 1) by terminal 1D and locking spring 1E and extends and next electric wire, and DC supply line Wdc is arranged in the rear side place of the metope of building wall wall part.This guarantees that DC electric power is supplied to pin female part 1B from DC electric power supply unit 71 (referring to Fig. 1).

Horizontal opposite sides at lid 20 are provided with connecting frame mounting portion 21, and it is equipped with connecting frame 30.The outstanding forward socket unit 22 that surpasses the general rectangular solid shape of connecting frame mounting portion 21 is arranged between the connecting frame mounting portion 21 in the horizontal direction.The plug 1C that is used for DC electric power is connected to socket unit 22 removedly.

Socket unit 22 has and inserts groove 23, said insertion groove 23 from the positive 22a of socket unit 22 cave in backward and form the general rectangular shape (as on the fore-and-aft direction in the plane graph of front side finding).In the present embodiment, insert groove 23 possess in its two vertical lower and the opposite corner of level sloping portion 23a (as on the direction of insertion of plug 1C in the plane graph of (that is, on fore-and-aft direction) finding).In addition, extending flute part 23b is arranged at the center of inserting extension under the groove 23.The shape of the insertion groove 23 of socket unit 22 changes with the supply voltage of power supply and the kind of electric current and supply of electric power circuit.

In zone by the socket unit 22 that inserts groove 23 encirclements, plug receiving portion 24 is set, it has the positive 24a that flushes with the positive 22a of socket unit 22.Plug receiving portion 24 in shape corresponding to inserting groove 23, and through the general rectangular shape that forms that two sides are vertically extended and two side along continuous straight runs extend (as on the fore-and-aft direction in the plane graph of front side finding).Two pin patchholes 25 are arranged in the plug receiving portion 24.Pin patchhole 25 is supply of electric power pin patchhole, and it is through forming the through hole with round-shaped (in the plane graph like finding on fore-and-aft direction).

As illustrating among Fig. 2 B, pin patchhole 25 is arranged along reference side 24b (that is, the upside of the outer peripheral edge that the along continuous straight runs of plug receiving portion 24 extends).In the pin patchhole 25 each is arranged in the eccentric position, and said eccentric position is nearer than side 24c under plug receiving portion 24 apart from reference side 24b.In other words, pin patchhole 25 is arranged among the plug receiving portion 24 side place on the heart C1 (the wherein intersection point of two diagonal at four angles of this center C 1 expression attachment plug receiving portion 24 (that is, single-point line)).

Pin patchhole 25 is arranged in the opposite sides of center C 1 along continuous straight runs.In detail, pin patchhole 25 in vertical direction under the plug receiving portion 24 the end portion 25a of side 24c be arranged in reference side 24b and in the horizontal direction between the straight line L1 (double dot dash line) of extend past center C 1.That is, under the pin patchhole 25 end parts 25a be arranged in straight line L1 vertically on the side place.

The width H1 of the general rectangular plug receiving portion of measuring in the horizontal direction 24 in the zone that sloping portion 23a and extending flute part 23b do not exist vertically for constant in fact.Therefore, even pin patchhole 25 is arranged at center C 1 top in vertical direction, but can prevent the minimizing of the distance B 1 between the pin patchhole 25.This makes it possible to prevent the problem (as illustrated among Figure 49 B) of the size increase of problem (as illustrated among Figure 49 A) that the distance B R1 between the pin patchhole 203 of socket unit 200 reduces and socket unit 200.

Because pin patchhole 25 is round-shaped through forming, therefore compare with pin patchhole 303 illustrated in Figure 50 A and Figure 50 B, become and can reduce socket unit 22 width in vertical direction.Therefore; As comparing through the socket unit 300 that forms rectangular shape and make its long limit can extend (illustrated in like Figure 50 A and Figure 50 B) in vertical direction with pin patchhole 303, can be arranged in pin patchhole 25 in the plug receiving portion 24 that drops in the single module size among the upside place of heart C1.Therefore, plug be can prevent and problem (as illustrated among Figure 50 A) and the socket unit 300 big or small problems (as illustrated among Figure 50 B) that increase in the socket unit 300 oppositely are inserted into.

As illustrating among Fig. 3 A; Socket 1A has in accordance with the sizes of Japanese Industrial Standards (referring to JISC 8303); And form the size in the size (hereinafter being called " single module size ") that one of drops on nearly in three modules the person, said three modules can be attached to the fixed frame 2 (referring to JIS C 8375) of the interchangeable connecton layout of big square hub type shoulder to shoulder

Fixed frame 2 form frame shape and therein heart place possess the cardinal principle rectangular aperture 40 that extends in vertical direction on long limit.On fixed frame 2, in end parts and the end portion, the standing part 41 that is fixedly secured to switch enclosure (not shown) is set.Be used for interconnecting the in vertical direction a pair of coupling part 42 of each standing part 41 is arranged at the horizontal end portion of standing part 41.

In each standing part 41 each has: first through hole 43, and screw (not shown) is inserted into wherein, is fastened to the secure component of switch enclosure as each that is used for each standing part 41; And second through hole 44, screw (not shown) is inserted into wherein with as the secure component that is used for binding 3 (referring to Fig. 4).

In each coupling part 42 each possesses the device standing part 45 that the inward flange in each in coupling part 42 on the fore-and-aft direction extends back.In device standing part 45, be provided with and extend in the horizontal direction and pass the fixing hole 46 that a plurality of perpendicular separations of device standing part 45 are opened.

As illustrating among Fig. 3 B, each in the connecting frame 30 of socket 1A possesses the projection 31 that two perpendicular separations are opened.By projection 31 is engaged with the fixing hole 46 of fixed frame 2 socket 1A is mounted to fixed frame 2.

As illustrating among Fig. 4, plate 3 is attached to fixed frame 2 to the place, front side on fore-and-aft direction.Plate 3 has opening 3a, and it forms and drops on the interior size of single module size.The socket unit 22 of socket 1 is contained in out in the 3a.Therefore, on fore-and-aft direction before the metope side only can see plate 3 and socket unit 22.

Next, will describe the electric connection structure in the cage structure and socket 1 within the socket 1 in detail referring to Fig. 5 to Fig. 8, said electric connection structure is between pin female part 1B and be used to supply between the electric wire of DC electric power.

Referring to Fig. 5, socket 1 comprises: pin female part 1B, and it is used for when plug 1C is inserted into socket unit 22, being connected with plug base pin 52; Terminal 1D, it is electrically connected to pin female part 1B; Elastic locking spring 1E; And release-push 1F, it can pressure-lock spring 1E, and all parts are contained in the socket 1A.

The socket main body 10 of socket 1 has the inner space that is used to hold these parts.In other words, pin female part 1B, terminal 1D, locking spring 1E and release-push 1F are arranged in the inner space of socket main body 10.Can make its simplification by these parts are put together.For example, pin female part 1B and terminal ID can form single part.

In the present embodiment, socket 1 possesses two the pin female part 1Bs consistent with the number of pin patchhole 25.Each (it is processed by conductive metallic material) among the pin female part 1B comprises and is used for plug base pin 52 is retained on the holder part 60 of appropriate location and the flat terminal connecting portion 61 that continues to extend back from holder part 60.Integral type forms holder part 60 via using single kind material with terminal connecting portion 61.In the present embodiment, the person one of is connected among the pin female part 1B person one of among the terminal 1D.

As illustrating among Fig. 5, Fig. 7 A and Fig. 7 B, each among the terminal 1D (it is processed by conductive metallic material) comprises: pin is shelved parts (rest-member) coupling part 62, and it is connected to each the terminal connecting portion 61 among the pin female part 1B; The spring movement limiting portion divides 63, and its bending is to hide each among the locking spring 1E; And terminal part 64, each in the electric wire that supply DC electric power is used is connected to said terminal part 64.Pin shelve parts coupling part 62, spring movement limiting portion divide 63 and terminal part 64 singly plant material and integral type forms via using.After in the electric wire L (referring to Fig. 7 B) that the DC supply of electric power is used each is connected to terminal part 64, shelves parts coupling part 62 and give pin female part 1B the DC supply of electric power via pin.In the present embodiment, among the locking spring 1E both one of are arranged among the terminal 1D on the person.

Each (it is processed by conductive metallic material) among the locking spring 1E comprises each the pressing piece 65 that is used for flexiblely pushing electric wire L.Pressing piece 65 is strain in the horizontal direction.In the present embodiment, pressing piece 65 comprises: the first pressing piece 65a, each that is used for rear side place on fore-and-aft direction pushing electric wire L; And the second pressing piece 65b, each that is used for front side place on fore-and-aft direction pushing electric wire L.

Among each release-push 1F each is arranged among the locking spring 1E in each that is arranged among the terminal 1D.61 one-tenth relativenesses of terminal connecting portion of among locking spring IE and the terminal 1D each and being arranged in the inner space of socket main body 10.

Among the release-push 1F each (it is processed by insulating synthetic resin) comprises the collar (collar) part 66 that can engage with locking spring 1E.That is each among the release-push 1F can pressure-lock the first pressing piece 65a of spring 1E by collar portion 66.

Extend the socket main body 10 that is engaged to socket 1 with the electric wire L (referring to Fig. 7 B) of supply DC electric power at the rear side of fore-and-aft direction from DC supply line Wdc.As visible among Fig. 6, the socket main body 10 of socket 1A has the electric wire insertion holes 11 of inserting electric wire L.The number of electric wire insertion holes 11 depends on the number of locking spring 1E.

For pin female part 1B is electrically connected to DC supply line Wdc, electric wire L is inserted and passes electric wire insertion holes 11 from socket main body 10 outsides.Fig. 7 A is the constructed profile that illustrates the state of the socket 1 before electric wire L is inserted in the electric wire insertion holes 11.In Fig. 7 A, come only to illustrate socket main body 10 with cross section.This cross section is along the line S1-S1 of the single-point among Fig. 6 and intercepting.Fig. 7 B is the constructed profile that illustrates the state of the socket 1 after electric wire L is inserted in the electric wire insertion holes 11.In Fig. 7 B, come only to illustrate socket main body 10 with cross section.This cross section is along the line S1-S1 of the single-point among Fig. 6 and intercepting.

As illustrating among Fig. 7 A and Fig. 7 B, insert and pass that among each the electric wire L in the electric wire insertion holes 11 each is driven and between each the terminal part 64 and each the pressing piece 65 among the locking spring 1E among the terminal 1D that arrives.At this moment, pressing piece 65 strains to be moving away from terminal part 64, by its recuperability among the electric wire L each are remained in the appropriate location.That is each among the electric wire L is clamped by terminal 1D and locking spring 1E.

In the present embodiment, each among the electric wire L is clamped by the first pressing piece 65a and the second pressing piece 65b at two some places.Locate nipped situation on one point with among the electric wire L each and compare, this makes it possible among the electric wire L each firmly is retained in the appropriate location.In this way, will insert and pass electric wire insertion holes 11 by locking spring 1E is pressed on the terminal 1D with the electric wire L that supplies DC electric power.Therefore, the electric wire L from DC supply line Wdc extension is connected to pin female part 1B via locking spring 1E and terminal 1D.

In the present embodiment, can be by instrument (not shown) is urged in the socket main body 10 and then carries out appointed task the electric wire L that is urged in the socket main body 10 is pulled out from rear side.As illustrating among Fig. 6, tool insert hole 12 corresponding with release-push 1F on number is formed in the socket main body 10 of socket 1A.Instrument such as small-sized bottle opener or its fellow can be inserted in the tool insert hole 12.

For pulling out the electric wire L that clamps by terminal 1D and locking spring 1E from socket main body 10, instrument (not shown) one of is inserted and passes in the tool insert hole 12 person one of to operate among each release-push 1F the person.Fig. 8 A illustrates that in electric wire L each is inserted into back in each in the electric wire insertion holes 11 but the constructed profile of the state that occurs before the person one of in by said tool operation release-push 1F.In Fig. 8 A, come only to illustrate socket main body 10 with cross section.This cross section is along the line of the single-point among Fig. 6 S2-S2 intercepting.Fig. 8 B is the constructed profile that illustrates the state that one of operate among each release-push 1F the person by said instrument after, occurs.In Fig. 8 B, come only to illustrate socket main body 10 with cross section.This cross section is also along the line of the single-point among Fig. 6 S2-S2 intercepting.

As illustrating among Fig. 8 A, under the situation that release-push 1F does not operate by said instrument, each among the electric wire L is clamped at two some places by the first pressing piece 65a and the second pressing piece 65b.Operation as if institute illustrates among person such as Fig. 8 B one of among the release-push 1F, then the collar portion 66 of each among the release-push 1F is pushed the first pressing piece 65a.In other words, each among the release-push 1F pressure-locks spring 1E, make win pressing piece 65a can away among the electric wire L each and move.Therefore, the first pressing piece 65a and terminal part 64 can be clamped each release among the electric wire L certainly.By each some clamping at place that is released among 2 electric wire L that locate to clamp, becoming can be easy to pull out each among the electric wire L from socket main body 10.

Next, will describe the structure of plug 1C and be used for plug 1C is inserted into the structure of socket 1 referring to Fig. 9 to Figure 11.

Referring to Fig. 9 A, plug 1C comprises cable section 50 and is connected to the plug body 51 of cable section 50.Plug body 51 has apparent surface 51a relative with the plug receiving portion 24 (referring to Figure 10) of socket 1 on fore-and-aft direction.On apparent surface 51a, be provided with on fore-and-aft direction from rearwardly projecting two plug base pins 52 of apparent surface 51a and be used for externally hiding the encirclement wall 53 of the general rectangular of plug base pin 52.Plug base pin 52 surrounds wall 53 through being provided with on fore-and-aft direction, to give prominence to a little backward above this.This encirclement wall 53 through structure to have shape corresponding to the shape of the insertion groove 23 of socket 1.

As illustrating among Fig. 9 B, plug base pin 52 is arranged at the upside place (wherein these center C 2 expressions connect the intersection point of two diagonal (that is single-point is rule) at four angles of these encirclements walls 53) that surrounds heart C2 among the wall 53.Plug base pin 52 along continuous straight runs and be arranged in the opposite sides of center C 2.In detail, end parts 52a is arranged in extension on the horizontal direction and straight line L2 (double dot dash line) top of process center C 2 under the plug base pin 52.

When in like Figure 10, illustrating plug 1C and being engaged to socket 1, the encirclement wall 53 of plug body 51 is inserted in the insertion groove 23 of socket unit 22.At this moment, plug base pin 52 is inserted in the pin patchhole 25.

In accordance with in the convention socket unit 110 of IEC standard,, insert groove 111 and surround wall 102 round-shaped through forming (in plane graph) like finding on fore-and-aft direction to have as illustrating among Figure 48 A and Figure 48 B.The encirclement wall 102 of this meaning plug 100 can be inserted on 360 degree of circumferencial direction and insert in the groove 111.

Yet, in the present embodiment, insert groove 23 and surround wall 53 have substantially square shape (or general rectangular shape) (as on the fore-and-aft direction in the plane graph of front side finding).This meaning is surrounded wall 53 and is limited to both direction with respect to the direction of insertion of inserting groove 23.Make the user can be easy to determine that plug 1C is inserted into the direction in the socket 1 by limiting the direction of insertion of plug 1C in this way, becoming with respect to socket 1.Therefore, the user can be easy to plug 1C is inserted in the socket 1, avoids reverse insertion simultaneously.

Referring to Figure 11 A, pin female part 1B is arranged in the pin patchhole 25.When illustrated plug 1C was inserted in the socket 1 in like Figure 11 B, the plug base pin 52 of plug 1C kept being clamped by the pin female part 1B of socket 1.At this moment, holder part 60 strains are to be retained on the appropriate location by its elastic force with plug base pin 52.Therefore, socket 1 and plug 1C get into conduction state.

As user illustrated in fig. 12 attempting plug 1C oppositely is inserted under the situation in the socket 1, the plug base pin 52 of plug 1C is positioned at heart C1 below among the plug receiving portion 24 in vertical direction.Therefore, plug base pin 52 contacts with the positive 24a of plug receiving portion 24, makes by this and can not plug 1C be inserted in the socket 1.

Under this state, pin patchhole 25 is spaced apart from each other with plug base pin 52 in vertical direction.This prevents that reliably plug base pin 52 is inserted into unintentionally in the pin patchhole 25.

Next, will the shape with the socket unit 22 of supply change in voltage be described referring to Figure 13.

The shape of socket unit 22 can change as follows.The supply voltage of variety classes (for example, 6V, 12V, 24V and 48V) is used for the electric installation 72 operated from the electric power of DC electric power supply unit 71 supplies.Therefore, become and to come to distinguish socket unit 22 by at least one the shape in four angles of change inserting groove 23 and plug receiving portion 24 (that is, the cardinal principle rectangle part of socket unit 22) according to supplying voltage.

More specifically say it, one or two sloping portion 23a becomes corresponding relation with the supply voltage of 6V, 12V and 48V and is formed in four angles of inserting groove 23, and in such cases, the supply voltage of 24V is used as reference voltage.Some angles corresponding to sloping portion 23a in four angles of plug receiving portion 24 also form the tilted shape consistent with sloping portion 23a.

If supply voltage is 6V, as illustrating among Figure 13 A, then a sloping portion 23a is formed in the lower right corner in four angles of inserting groove 23.If supply voltage is 12V, as illustrating among Figure 13 B, then a sloping portion 23a is formed in the lower left corner in four angles of inserting groove 23.If supply voltage is 48V, as illustrating among Figure 13 C, then two sloping portion 23a are formed in the lower left corner and the lower right corner in four angles of inserting groove 23.If supply voltage is 24V,, does not then have sloping portion and be formed in the arbitrary angle in four angles of inserting groove 23 as illustrating among Figure 13 D.

Similarly, the encirclement wall 53 of plug 1C has with the shape of inserting groove 23 and one of as one man forms or two sloping portions.This makes it possible to distinguish socket unit 22 according to supply voltage.Therefore, unless the shape of the insertion groove 23 of the form fit socket unit 22 of the encirclement wall 53 of plug 1C, plug 1C can not be inserted in the socket 1.This prevents to supply being connected between socket 1 that voltage differs from one another and the plug 1C.

Referring to Figure 19, shape has four of forming according to supply voltage with the supply change in voltage and the comparison socket unit 400 of abideing by the IEC standard and cuts grooves 404 to 407.More specifically say it, the insertion groove 401 with tubular shape (in the plane graph like finding on fore-and-aft direction) is formed in the socket unit 400.In by the plug receiving portion 402 that inserts groove 401 encirclements, form the pin patchhole 403 of the plug base pin that inserts plug (not shown).

Along periphery edge under the plug receiving portion 402, form incision groove 404 to 407 with a mode, make itself and insertion groove 401 make up and insert groove 401 certainly diametrically and cave inward.On plug receiving portion 402, in the periphery edge, be formed for preventing the reverse incision groove 408 that inserts of plug.

Thus, cut groove 404 to 407, and be formed in 120 °, 150 °, 210 ° of reference position (0 °) clockwise direction that has incision groove 408 and 240 ° of positions corresponding to supply

voltage

6V, 12V, 24V and 48V.The plug of variety classes comprises the different identification rib that is provided with cutting 404 to 407 one-tenth corresponding relations of groove.Identification one of in the rib person be inserted into and cut in corresponding one in the groove 404 to 407, guarantee that by this plug of coupling supply voltage is inserted in the socket unit 400.

Yet in socket unit 400, each cuts groove 404 and 407 and is arranged near the pin patchhole 403.This situation causes the problem that plug receiving portion 402 is reduced by intensity.In addition, surround within the wall on the surface because each the identification rib in the plug is formed at, thus the user be difficult to before plug the rear upwards from the front side with the position of the said identification rib of visual confirmation.For this reason; The user need be after the plug side position of confirming said identification rib with position alignment with the corresponding person in the incision groove 404 to 407 of the position of the identification rib of plug and socket unit 400, and then plug is inserted in the socket unit 400.The task that this measure will make plug be inserted in the socket unit 400 complicates.

Yet in the socket 1 of present embodiment, sloping portion 23a is formed in the lower angle in four angles of inserting groove 23.Because this characteristic, the structure of the convention socket unit 400 of just having stated with preceding text is compared, and the distance between sloping portion 23a and the pin patchhole 25 becomes greatly.Therefore, compare, can prevent that the intensity of plug receiving portion 24 from reducing with the structure of convention socket unit 400.

Owing to the overall shape of the encirclement wall 53 of plug 1C is looked supply voltage and is changed, thus the user can be at rear before the plug 1C upwards at the place, front side with the matched position of visual confirmation plug 1C with respect to socket unit 22.This makes that the user can be easy to plug 1C is inserted in the socket unit 22.

Next, the shape of the socket unit 22 that becomes with the kind as the supply of electric power circuit (not shown) of power supply will be described referring to Figure 14 A and Figure 14 B.The supply of electric power circuit is arranged between DC electric power supply unit 71 and the socket 1 and for example is installed in the distribution panelboard 74.

The supply of electric power circuit comprises at least two kinds of circuit, that is the ELV circuit (extra-low voltage circuit, ELV) and the safety extra low voltage circuit (safety extra-low voltage circuit, SELV).ELV and SELV specify among the IEC60950-1 in the IEC standard and the IEC60335-1 respectively.

Electric installation 72 (referring to Fig. 1) has different built-in electrical insulation structures, and this looks which person among use ELV and the SELV and decides.More specifically say it, the electric installation 72 with ELV uses double insulating structure or reinforced insulation system, and this means that said insulation system is extremely strict.On the contrary, situation is not used double insulating structure or reinforced insulation system for the electric installation 72 with SELV sometimes.Therefore, it is simpler than the insulation system of the electric installation with ELV 72 to have the insulation system of electric installation 72 of SELV.

Be connected at the electric installation with ELV 72 under the situation of the socket 1 that is used for SELV, do not go wrong.This is because have the extremely strictness of insulation system of the electric installation 72 of ELV.On the contrary, be connected to the socket 1 that is used for ELV if having the electric installation 72 of SELV, situation about then occurring usually is that electric installation 72 can break down through the dangerous high voltage of supply the time.This be because based on the insulation system of the electric installation 72 of SELV for simplifying.Therefore, need distinguish whether socket 1 and plug 1C be compatible with ELV or SELV.In detail, must prevent that the electric installation 72 with SELV is connected to the socket 1 that is used for ELV unintentionally.

Given this, as illustrating among Figure 14 A, the socket unit 22 that is used for SELV comprises the extending flute 23b that is formed at side under the insertion groove 23.Extending flute 23b is with 23 combinations of insertion groove and through forming to extend on the side direction from inserting under the groove 23 in vertical direction.On the contrary, as illustrating among Figure 14 B, the socket unit 22 that is used for ELV is structures of omitting extending flute 23b.This alteration of form of socket unit 22 is unimportant.Therefore, the user can distinguish socket unit 22 that is used for SELV and the socket unit 22 that is used for ELV.

Can be inserted into the socket unit 22 that is used for SELV although be used for the plug 1C of ELV, the plug 1C that is used for SELV can not be inserted into the socket unit 22 that is used for ELV.This makes it possible to prevent that the electric installation 72 with SELV is connected to the socket 1 that is used for ELV unintentionally.

In the socket unit that shape changes with the kind of supply of electric power circuit, can expect using following structure (first structure), wherein, as illustrating among Figure 20 A, extending flute 23b is independent of insertion groove 23 and forms.In addition, can expect using following structure (second structure), wherein, as illustrating among Figure 20 B, extending flute 23b is formed at and inserts groove 23 outsides, that is is formed at plug receiving portion 24 outsides.

Yet, the problem that the intensity that first structure suffers a kind of plug receiving portion 24 reduces because of the shortening of the distance between this extending flute 23b and the pin patchhole 25.Although second structure does not have intensity to reduce problem, its size that causes socket unit 22 becomes big problem owing to the setting of extending flute 23b.

In the present embodiment, this extending flute 23b and this insertion groove 23 make up in its downside.Compare with first structure, this makes it possible to increase the distance between pin patchhole 25 and the extending flute 23b.In addition, can prevent any increase of the size of socket unit 22, extension extends upward under the groove 23 because this extending flute 23b is from inserting, that is, because this extending flute 23b is formed in the plug receiving portion 24.Therefore, with regard to present embodiment, becoming to solve the problem that in first structure and second of preceding text statement is constructed, causes.

Next, will describe referring to Figure 46 A to Figure 46 C and look supply of current and supply voltage and the plug receiving portion 24 that becomes and insert the shape of groove 23.In Figure 46 A to Figure 46 C, will be used for the supply voltage of 48V and the DC socket 1 of SELV circuit and be used as instance.

Exist a plurality of electric installations of the supply of current that needs (for example) 6A, 12A and 16A.In the present embodiment, by in the shape of the plug receiving portion of watching from the front 24, forming the shape that indenture (indentation) changes this insertion groove 23, make the kind of DC socket 1 visual supply of current by this and be able to distinguish.In other words, based on being the DC socket 1 of 6A, in the DC socket 1 of the supply of current of 12A and 16A, said indenture is set like the supply of current that is illustrated among Figure 46 A.

In specific words, the supply of current that in like Figure 46 B, is illustrated is in the DC socket 1 of 12A, and the second triangular shaped extending flute 23c ' is by on left and right directions Y, extending in inside and be arranged at part place on the inclined groove 23c from inclined groove 23c.Similarly, the indenture 180 that constitutes two limits of the second triangular shaped extending flute 23c ' is arranged at the part place corresponding to the second extending flute 23c ' of plug receiving portion 24.In addition, the supply of current that in like Figure 46 C, is illustrated is in the DC socket 1 of 16A, and the second extending flute 23c ' and indenture 180 are arranged at two each part places, top that insert among the groove 23c.Simultaneously, be not arranged under the situation about inserting in the groove 23 at inclined groove 23c, each in the second extending flute 23c ' and the indenture 180 can be through forming to have the shape that is seen as the essence quadrangle from anterior aspect.

The various case descriptions of shape of insertions groove 23 that change socket unit 22 according to the kind of supply voltage, supply of current or supply of electric power circuit hold being incorporated herein with way of reference within the said PCT application case in the PCT application case of being applied for by the applicant of the application's case PCT/IB2010/001892 number.

Next, the variation of the layout of socket 1 will be described referring to Figure 15 A to Figure 15 G.

Because the socket 1 of present embodiment has the single module size through being set at, therefore can with congener socket 1 independently or with Japanese Industrial Standards in other connecton layout with single module size or two module size of specifying be attached to fixed frame 2 in combination.In other words, socket 1 and connecton layout can be attached to common fixed frame 2.The opening 3a of three module size is formed in each in the plate 3 that is illustrated among Figure 15 A to Figure 15 G.

As illustrating among Figure 15 A, congener socket 1 can be attached to fixed frame 2 (referring to Fig. 3) a plurality ofly.As illustrating among Figure 15 B, shape is attached to fixed frame 2 with the socket 1 of supply change in voltage and shape with the socket 1 that the kind of supply of electric power circuit changes capable of being combinedly.As illustrating among Figure 15 C, socket 1 can with the socket that is used for coaxial cable 5 and to be used for the modular jack 6 of telephone wire combined and install.As illustrating among Figure 15 D, socket 1 can with the modular jack that is used for LAN 7 and to be used for the modular jack 6 of telephone wire combined and install.

As illustrating among Figure 15 E, socket 1 can be installed with AC outlet 4 combinations.As illustrating among Figure 15 F, socket 1 can be installed with switch 8 combinations.As illustrating among Figure 15 G, socket 1 and AC outlet 4a can be arranged in the fixed frame 2 of two open-types.The variation of the layout of socket 1 is not limited to previous examples (illustrating among Figure 15 A to Figure 15 G).The instance of above-mentioned variation can compound mode be specialized.

The socket 1 of present embodiment can provide following favourable effect.

(1) the insertion groove 23 of socket unit 22 is through constructing to have the general rectangular shape.Therefore, compare with the insertion groove with tubular shape, the encirclement wall 53 that can limit plug 1C is inserted into the direction of inserting in the groove 23.This makes the user can be easy to conclude that plug 1C is inserted into the direction of insertion of wanting in the socket unit 22, improves the simplification of use by this.Therefore, the user can be easy to plug 1C is inserted in the socket 1, avoids reverse insertion simultaneously.

In addition, pin patchhole 25 is formed at heart C1 top among the plug receiving portion 24 along on the plug receiving portion 24 and outer periphery edge.This makes it possible to need not inserting groove 23 or surrounding under the situation that forms anti-reverse insert structure in the wall 53 in addition to prevent that plug 1C oppositely is inserted in the socket 1.Therefore, compare, can prevent the increase of the size of socket 1 with the situation that in socket, forms anti-reverse insert structure in addition.

(2) socket main body 10 is provided with electric wire insertion holes 11, and electric wire L is inserted in the electric wire insertion holes 11 with the supply DC electric power from the outside.In the inner space of socket main body 10, locking spring 1E is provided, be used for insertion and the electric wire L that passes electric wire insertion holes 11 are pressed in terminal 1D.Because this characteristic, can use the elasticity that respectively locks spring 1E electric wire L is clamped by terminal 1D and locking spring 1E.This makes it possible to be easy to carry out being connected of electric wire L and terminal 1D.

(3) end parts 25a is positioned at center C 1 top in vertical direction under the pin patchhole 25.This makes it possible to when the user attempts oppositely to be inserted into plug 1C in the socket 1, prevent that plug base pin 52 is inserted in the pin patchhole 25.Therefore, can prevent reverse insertion more reliably.

(4) sloping portion 23a is formed at and inserts in the groove 23.Surrounding wall 53 also possesses and the consistent sloping portion of shape that inserts groove 23.Because the shape of surrounding the shape of wall 53 and inserting groove 23 can change with supply voltage, can prevent that therefore plug 1C is inserted into supply voltage by error to be different from the socket 1 of supply voltage of plug 1C.

In addition, the user can be by on fore-and-aft direction, concluding the direction of insertion of plug 1C with respect to socket 1 from the front side with the shape of visual confirmation encirclement wall 53.This makes that the user can be easy to plug 1C is inserted in the socket 1.

(5) sloping portion 23a is formed at and inserts under the groove 23 in the side (that is, under the plug receiving portion 24 near the side 24c).Near the structure that is formed at and inserts on the groove 23 in the side (that is, the reference side 24b of plug receiving portion 24) with sloping portion is compared, and this makes it possible to increase the distance between sloping portion 23a and the plug insertion 25.Therefore, becoming to increase the intensity of plug receiving portion 24, and therefore can prevent the infringement to plug receiving portion 24 that script can take place when inserting and pulling out plug 1C.

(6) plug receiving portion 24 has the position corresponding to the sloping portion 23a that inserts groove 23 and shape and the consistent inclined side of sloping portion 23a of inserting groove 23.This makes it possible to prevent to insert the narrowed width of groove 23.

Do not have in the supposed situation of position corresponding to the inclined side of the sloping portion 23a that inserts groove 23 at plug receiving portion 24, only insert that periphery edge forms tilted shape outside the groove 23.Therefore, the width between the periphery edge becomes in sloping portion 23a and is narrower than the width in the zone except that sloping portion 23a outside plug receiving portion 24 and the insertion groove 23.In the present embodiment, the inclined side of plug receiving portion 24 becomes corresponding relation to form with the sloping portion 23a that inserts groove 23.This makes it possible to solve the problem of the narrowed width of inserting groove 23.

(7) the sloping portion 23a of insertion groove 23 forms the tilted shape consistent with the inclined side of plug receiving portion 24.Therefore, tilted shape is simple, and can realize by some of only cutting away in four angles of inserting groove 23 and plug receiving portion 24.Because this characteristic, can prevent that plug 1C is inserted into supply voltage by error and is different from the structure in the socket 1 of supply voltage of plug 1C to provide than plain mode.This makes it possible to be easy to make socket 1.

(8) this extending flute 23b extended should insert groove 23 certainly through structure.The situation that is independent of this insertion groove 23 with this extending flute 23b and forms is compared, and this makes it possible to prevent that the size of socket unit 22 from increasing and the intensity reduction of plug receiving portion 24.

(9) this extending flute 23b is formed under this insertion groove 23 in the side.Be formed at pin patchhole 25 with this extending flute and compare with the situation between this insertion groove 23, this makes it possible to increase the intensity of plug receiving portion 24.Therefore, can prevent the infringement that script can take place when inserting and pulling out plug 1C to plug receiving portion 24.

(10) the positive 22a of socket unit 22 flushes with the positive 24a of plug receiving portion 24 on fore-and-aft direction.The plug base pin 52 of plug 1C is given prominence to a little forward on fore-and-aft direction and is surrounded wall 53 above this.These structures have been guaranteed: when the user attempted oppositely to be inserted into plug 1C in the socket unit 22, before this encirclement wall 53 was inserted in the insertion groove 23 quite a lot ofly, plug base pin 52 contacted with plug receiving portion 24.This makes the user can clearly pick out reverse insert of plug 1C to the socket unit 22.

When plug 1C oppositely is inserted in the socket unit 22, no longer includes and maybe plug 1C be kept being attached to socket unit 22.This elimination makes plug 1C keep reverse and is inserted into the possibility in the socket unit 22.

(11) socket 1A is through forming in accordance with Japanese Industrial Standards and one of dropping on nearly in three modules in person's the size, and said three modules can be attached to the fixed frame 2 of the interchangeable connecton layout of big square hub type shoulder to shoulder.Because this characteristic can be attached to the fixed frame 2 that other is equal to the connecton layout of ground standardization with socket 1A.Therefore, need not to make in addition the fixed frame that is exclusively used in socket 1A, this helps to make the fixed frame standardization.This makes it possible to socket 1 is attached to fixed frame 2 with other connecton layout, and said other connecton layout is through forming the size that drops in single module size or two module size, the simplification in the use of this enhancing socket 1.

The warp of first embodiment is revised instance

The socket 1 of present embodiment is not limited to foregoing, but can revise as follows.Following is not to be only applicable to first embodiment through revising instance, but mode that can combination with one another is specialized.

Although 23b is formed in the plug receiving portion 24 according to this extending flute of first embodiment, the formation position of this extending flute 23b is not limited thereto.For example, as illustrating among Figure 16 A, this extending flute 23b can through form with in vertical direction under this insertion groove 23 side direction extend below.As illustrating among Figure 16 B, this extending flute 23b can be through forming to extend on the side direction from inserting on the groove 23 in vertical direction.

As illustrating among Figure 16 C, this extending flute 23b can be through forming to extend left from the left side of inserting groove 23 in the horizontal direction.As illustrating among Figure 16 D, this extending flute 23b can be through forming to extend to the right from the right side of this insertion groove 23 in the horizontal direction.

Although discern according to forming sloping portion 23a in the supply voltage of the first embodiment socket 1 one or two angle by side under inserting groove 23, the structure that is used to discern the supply voltage of socket 1 is not limited thereto.If the alteration of form of this insertion groove 23 is to permit inserting the encirclement wall of the plug with compatible supply voltage, this is fully feasible.

For example, as illustrating among Figure 17 A, can form step-like dimple 23c by cutting away one in four angles of inserting groove 23.As illustrating among Figure 17 B, can cut away this insertion groove 23 by part and be formed on the outwards outstanding projection 23d in side.In such cases, the encirclement wall 53 of plug 1C through form with have the shape identical with the shape of inserting groove 23 (as on the fore-and-aft direction in the plane graph of front side finding).One of replace cutting away in four angles of this insertions groove 23 person to form dimple 23c, shown in Figure 17 C and Figure 17 D, can be under this inserts groove 23 this extending flute of formation 23b in right corner or the left comer of side.

Although be formed at according to first embodiment this sloping portion 23a and this extending flute 23b and insert under the groove 23 in the side, the position of this extending flute 23b is not limited thereto.For example, sloping portion 23a and extending flute 23b can be formed on this insertion groove 23 in the side.

Although be arranged in heart C1 top among the plug receiving portion 24 according to end parts 25a under the first embodiment pin patchhole 25, the position of end portion 25a is not limited thereto., the user prevents that plug base pin 52 is inserted in the pin patchhole 25 to fully feasible when attempting oppositely to be inserted into plug 1C in the socket 1.End parts 25a can be formed in fact in the upright position identical with center C 1 under this meaning pin patchhole 25.

Although should insert groove 23 through forming the general rectangular shape that extend in the horizontal direction on long limit and minor face extends in vertical direction according to first embodiment, the shape of this insertion groove 23 is not limited thereto.This insertion groove 23 can form has the equal in fact horizontal sides and the square shape of vertical edges.

Although in plug receiving portion 24, form two pin patchholes 25,, can in plug receiving portion 24, form a grounding pin patchhole 26 in addition as another pin patchhole as illustrating among Figure 18 according to first embodiment.As pin patchhole 25, grounding pin patchhole 26 has round-shaped (in the plane graph like finding on the direction of insertion at plug).Ground pin pin (not shown) is inserted in the grounding pin patchhole 26.Grounding pin patchhole 26 can be formed under the pin patchhole 25 the side place and in vertical direction below center C 1.

In addition, grounding pin patchhole 26 can be formed in the horizontal centre position between the pin patchhole 25 and in the horizontal level identical with center C 1.In Figure 18, the upper part 26a towards the reference side 24b of plug receiving portion 24 of grounding pin patchhole 26 is arranged under the plug receiving portion 24 between the side 24c and straight line L1.In the socket with this grounding pin patchhole 26 1; Compare with grounding pin patchhole (not icon) situation of (as illustrated among Figure 50 A) in the plug receiving portion 302 that is formed at that has the area identical and have a rectangular shape of long limit vertical extent, can guarantee the beeline between each patchhole with grounding pin patchhole 26.

That is, make the distance between pin patchhole 25 and the grounding pin patchhole 26 be easy to guarantee through the socket 1 of revising instance.In having the plug (not shown) of plug base pin 52 and ground pin pin, can increase the distance between plug base pin 52 and the ground pin pin.

Although through forming to have the size that drops in the single module size, the size of socket 1 is not limited thereto according to the first embodiment socket 1.For example, socket 1 can form the size that drops in a half module size, two module size or the three module size.

Second embodiment

To describe the DC socket of second embodiment according to the present invention referring to Figure 21 to Figure 23, said DC socket is embodied as the DC socket in the wall part that is embedded in dwelling house at present.The difference of the present embodiment and first embodiment is to provide terminal 2D to replace terminal 1D, locking spring 1E and release-push 1F.

In addition, in some structure aspects of socket main body 10 and aspect the syndeton of terminal 2D and electric wire, present embodiment is different from first embodiment.To focus on that at present the difference with first embodiment comes second embodiment is described.Same parts will be represented and will be omitted the description to it by similar component symbol.

As illustrating among Figure 21 A to Figure 21 D, socket 1 comprises socket 1A, pin female part 1B (referring to Figure 24) and the terminal 2D (both all are contained in the socket 1A) of general rectangular solid shape.Pin female part 1B is contained in the inner space that the lid 20 by socket main body 10 and socket 1A defines, and is connected to electric wire Wdc via terminal 2D.Some part of terminal 2D is arranged near the horizontal opposite ends (referring to Figure 21 D) of socket 1A.

Referring to Figure 22, pin female part 1B and terminal 2D are contained in the inner space of socket 1A.More specifically say it, the rear portion of pin female part 1B and terminal 2D is so that pin female part 1B is attached to the state of terminal 2D and is placed in the socket main body 10.

Among the terminal 2D each is included on the fore-and-aft direction terminal body of the U type substantially part 80 of opening backward and is connected to the screw component 81 of terminal body part 80 with engage thread.Terminal body part 80 comprises: pin is shelved the parts holding parts and is divided 82, and it is fixed with among the pin female part 1B each; And screw fixing part 83, it is attached with screw component 81.Screw fixing part 83 and pin are shelved the parts holding parts and are divided 82 spaced apart in the horizontal direction.

When electric wire Wdc is connected to socket 1A, as illustrating among Figure 23 A, unclamp screw component 81 from screw fixing part 83 in advance, therefore between the head 81a of screw fixing part 83 and screw component 81, form the gap in the horizontal direction.Under this state, each among the electric wire Wdc is reeled around the axle 81b of screw component 81.

Next,, tighten screw component 81, make the head 81a of screw component 81 can more approach screw fixing part 83, make the head 81a of screw fixing part 83 and screw component 81 clamp each among the electric wire Wdc by this as illustrating among Figure 23 B.Therefore, as illustrating among Figure 23 C, will each among the wound electric wires Wdc be pressed on the terminal body part 80 around the axle 81b of screw component 81.

When socket 1A removes electric wire Wdc, carry out just having mentioned of task with reversed at preceding text.

Thus, each among the electric wire Wdc comprises so-called stranded line conductor W1, and said stranded line conductor W1 is by many thin copper wires are twisted together and form with the electric insulation cover part W2 that is used to hide conductor W1.With regard to the structure of electric wire Wdc, and compare by the formed single line conductor of the bar-shaped copper part thicker than the thin copper wire of conductor W1, can be easy to crooked this conductor W1.

The structure that the structure of plug 1C and being used for is inserted into plug 1C socket 1 is identical referring to the situation that Fig. 9 to Figure 15 describes in first embodiment with preceding text, and therefore will dispense the description to it.

The socket 1 of present embodiment can provide following advantageous effects.

(1) with regard to present embodiment, the insertion groove 23 of socket unit 22 is through constructing to have the sloping portion 23a that in its two angles, forms.Therefore, compare with the

insertion groove

111 or 201 like the tubular shape that illustrates among Figure 48 B, Figure 49 A and Figure 49 B, the encirclement wall 53 that can limit plug 1C is inserted into the direction of inserting in the groove 23.This makes the user can be easy to conclude that plug 1C is inserted into the direction of wanting in the socket unit 22, by this simplification of improvement use.Therefore, the user can be easy to plug 1C is inserted in the socket 1, avoids reverse insertion simultaneously.

In addition, pin patchhole 25 is formed at heart C1 top among the plug receiving portion 24 along the upside of periphery edge outside the plug receiving portion 24.This makes it possible to need not inserting groove 23 or surrounding under the situation that forms anti-reverse insert structure in the wall 53 in addition to prevent that plug 1C oppositely is inserted in the socket 1.Therefore, compare, can prevent the increase of the size of socket 1 with the situation that in socket, forms anti-reverse insert structure in addition.

(2) with regard to present embodiment, end parts 25a is positioned at center C 1 top in vertical direction under the pin patchhole 25.This makes it possible to when the user attempts oppositely to be inserted into plug 1C in the socket 1, prevent that plug base pin 52 is inserted in the pin patchhole 25.Therefore, can prevent reverse insertion more reliably.

(3) with regard to present embodiment, sloping portion 23a is formed in four angles of inserting groove 23.Surrounding wall 53 also possesses and the consistent diagonally extending portion of shape that inserts groove 23.Because the shape of surrounding the shape of wall 53 and inserting groove 23 can change with supply voltage, can prevent that therefore plug 1C mistake is inserted into supply voltage to be different from the socket 1 of supply voltage of plug 1C.

(4) with regard to present embodiment, sloping portion 23a is formed at and inserts under the groove 23 in the side (that is, under the plug receiving portion 24 near the side 24c).Near the structure that is formed at and inserts on the groove 23 in the extension (that is, the reference side 24b of plug receiving portion 24) with sloping portion is compared, and this makes it possible to increase the distance between sloping portion 23a and the plug insertion 25.Therefore, becoming to increase the intensity of plug receiving portion 24, and therefore, prevents the infringement to plug receiving portion 24 that when inserting and pulling out plug 1C, originally can take place.

(5) with regard to present embodiment, plug receiving portion 24 has the position corresponding to the sloping portion 23a that inserts groove 23 and shape and the consistent inclined side of sloping portion 23a of inserting groove 23.This makes it possible to prevent to insert the narrowed width of groove 23.

Do not have in the supposed situation of position corresponding to the inclined side of the sloping portion 23a that inserts groove 23 at plug receiving portion 24, only insert that periphery edge forms tilted shape outside the groove 23.Therefore, plug receiving portion 24 and insert outside the groove 23 between the periphery edge width in sloping portion 23a and become and be narrower than the width in the zone except sloping portion 23a.In the present embodiment, the inclined side of plug receiving portion 24 becomes corresponding relation to form with the sloping portion 23a that inserts groove 23.This makes it possible to solve the problem of the narrowed width of inserting groove 23.

(6) with regard to present embodiment, the sloping portion 23a that inserts groove 23 is through forming the tilted shape consistent with the inclined side of plug receiving portion 24.Therefore, tilted shape is simple and can realizes by some of only cutting away in four angles of inserting groove 23 and plug receiving portion 24.Because this characteristic, can prevent that plug 1C mistake is inserted into supply voltage and is different from the structure in the socket 1 of supply voltage of plug 1C to provide than plain mode.This makes it possible to be easy to make socket 1.

(7) with regard to present embodiment, extending flute 23b extends to insert groove 23 certainly through structure.Be independent of the situation of inserting groove 23 formation with extending flute 23b and compare, this makes it possible to prevent that the size increase of socket unit 22 and the intensity of plug receiving portion 24 from reducing.

(8) with regard to present embodiment, extending flute 23b is formed at and inserts under the groove 23 in the side.Be formed at pin patchhole 25 with extending flute and compare with situation about inserting between the groove 23, this makes it possible to increase the intensity of plug receiving portion 24.Therefore, can prevent the infringement that script can take place when inserting and pulling out plug 1C to plug receiving portion 24.

(9) with regard to present embodiment, the positive 22a of socket unit 22 flushes with the positive 24a of plug receiving portion 24 on fore-and-aft direction.The plug base pin 52 of plug 1C is outstanding a little forward this encirclement wall 53 that surpasses on fore-and-aft direction.These structures guarantee that when the user attempted oppositely to be inserted into plug 1C in the socket unit 22, before these encirclement wall 53 quite a lot of parts were inserted in the insertion groove 23, plug base pin 52 contacted with plug receiving portion 24.

This makes the user can clearly pick out reverse insert of plug 1C to the socket unit 22.When plug 1C oppositely is inserted in the socket unit 22, no longer includes and maybe plug 1C be kept being attached to socket unit 22.This has eliminated and has made plug 1C keep oppositely being inserted into the possibility in the socket unit 22.

(10) with regard to present embodiment, among the electric wire Wdc each is pressed on the terminal body part 80 by tightening screw component 81.With among terminal body part 80 and the electric wire Wdc each by (for example) soldering or welding and situation connected to one another is compared, this makes the user can be easy to carry out among the said electric wire Wdc each is connected to the task of said terminal body part 80.

(11) with regard to present embodiment, socket 1A is through forming in accordance with Japanese Industrial Standards and one of dropping on nearly in three modules in person's the size, and said three modules can be attached to the fixed frame 2 of the interchangeable connecton layout of big square hub type shoulder to shoulder.Because this characteristic can be attached to other fixed frame that is equal to the standardization connecton layout 2 with socket 1A.

Therefore, need not to make in addition the fixed frame that is exclusively used in socket 1A, this helps to make the fixed frame standardization.This makes it possible to socket 1 is attached to fixed frame 2 with other connecton layout, and said other connecton layout is through forming the size that drops in single module size or two module size, and this strengthens the ease of socket 1.

The 3rd embodiment

To describe the DC socket of the 3rd embodiment according to the present invention referring to Figure 24 to Figure 26, said DC socket is embodied as the DC socket in the wall part that is embedded in dwelling house at present.In some structure aspects of socket main body 10 and terminal 2D and aspect the syndeton of terminal 2D and electric wire Wdc, present embodiment is different from second embodiment.To focus on that at present the difference with second embodiment comes the 3rd embodiment is described.Same parts will be represented and will be omitted the description to it by similar component symbol.

Referring to Figure 24 A to Figure 24 D, the diapire 11 of socket main body 10 possesses two pairs of electric wire insertion holes 12, and electric wire Wdc (referring to Figure 26) inserts via said two pairs of electric wire insertion holes 12.The zone that has electric wire insertion holes 12 of diapire 11 is through forming with the outstanding backward remaining area that surpasses diapire 11 on fore-and-aft direction.

As illustrating among Figure 25, each among the terminal 2D comprises terminal body part 80, screw component 81 and is connected to the flat fixture 84 of the axle 81b of screw component 81.Fixture 84 be arranged in the horizontal direction pin shelve the parts holding parts divide 82 and screw fixing part 83 between.

When electric wire Wdc is attached to socket 1A, as illustrating the relation that fixture 84 is left with respect to screw fixing part 83 at interval among Figure 26 A.Under this state, with among the electric wire Wdc each via in the electric wire insertion holes 12 each and be inserted in the horizontal clearance between screw fixing part 83 and the fixture 84.

Then,, tighten screw component 81 (outwards tightening), make the head 81a of screw component 81 to move away from screw fixing part 83 in the horizontal direction as illustrating among Figure 26 B.Therefore, fixture 84 moves towards screw fixing part 83, makes among the electric wire Wdc each to be clamped by fixture 84 and screw fixing part 83.

When socket 1A removes electric wire Wdc, carry out just having mentioned of task with reversed at preceding text.Present embodiment can provide the effect (1) to (11) that is provided with second embodiment similar advantageous effects.

The 4th embodiment

To describe the DC socket of the 4th embodiment according to the present invention referring to Figure 27 to Figure 29, said DC socket is embodied as the DC socket in the wall part that is embedded in dwelling house at present.In some structure aspects of socket main body 10 and terminal 2D and aspect the syndeton of terminal 2D and electric wire Wdc, present embodiment is different from second embodiment.To focus on that at present the difference with second embodiment comes the 4th embodiment is described.Same parts will be represented and will be omitted the description to it by similar component symbol.

As illustrating among Figure 27 A to Figure 27 D, the sidewall 13 of socket main body 10 possesses and extends upward in front and back and through the cut-away portions 14 (referring to Figure 28) of sidewall 13.Terminal 2D partly is contained in the cut-away portions 14.The diapire 11 of socket main body 10 possesses two electric wire insertion holes 15, and electric wire Wdc inserts via said two electric wire insertion holes 15.

As illustrating among Figure 28, the box-like terminal body part 85 that each among the terminal 2D includes opening backward on fore-and-aft direction reaches the screw component 81 that is connected to terminal body part 85 with engage thread.Among the pin female part 1B each is held before being fixed to terminal body part 85.Screw component 81 is connected to surface on the terminal body part 85.

When electric wire Wdc is attached to socket 1A, as illustrating among Figure 29 A, the relation that the axle 81b of screw component 81 is opened with respect to plate 85a under the terminal body part 85 at interval.Under this state, among the electric wire Wdc each is inserted under axle 81b and the terminal body part 85 of screw component 81 in the down suction between the plate 85a.Then,, move towards lower plate 85a by the axle 81b that makes screw component 81 and tighten screw component 81, use each that make among the electric wire Wdc and clamp by surperficial 85a under the perpendicular end surface of the axle 81b of screw component 81 and the terminal body part 85 as illustrating among Figure 29 B.

When socket 1A moves electric wire Wdc, carry out just having mentioned of task with reversed at preceding text.Present embodiment can provide the effect (1) to (11) that is provided with second embodiment similar advantageous effects.

The warp of second to the 4th embodiment is revised instance

The socket 1 of second to the 4th embodiment is not limited to foregoing, but can revise as follows.Following is not to be only applicable to second to the 4th embodiment through revising instance, but mode that can combination with one another is specialized.

Although be formed in the center of inserting side under the groove 23 according to second to the 4th this extending flute of embodiment 23b, the formation position of this extending flute 23b is not limited thereto.For example, this extending flute 23b can be formed in the right end portion or left end portion of inserting side under the groove 23.In addition, the formation position of this extending flute 23b is not limited to insert extension under the groove 23.Perhaps, extending flute 23b can be formed in any one in four extensions that insert groove 23.

Although be formed in the plug receiving portion 24 according to second to the 4th this extending flute of embodiment 23b, the formation position of this extending flute 23b is not limited thereto.For example, as illustrating among Figure 30 A, this extending flute 23b can side direction extends below under the groove 23 to insert certainly through forming.As illustrating among Figure 30 B, this extending flute 23b can extend to the right with the right side of inserting groove 23 certainly through forming.The formation position of this extending flute 23b is not limited to the position that illustrated among Figure 30 A and Figure 30 B.Perhaps, this extending flute 23b can be formed in other extension that inserts groove 23.

Although according to the supply voltage of second to the 4th this socket 1 of embodiment is to discern by the sloping portion 23a that inserts groove 23, the structure that is used to discern the supply voltage of socket 1 is not limited thereto.If the alteration of form that inserts groove 23 then is fully feasible to permit inserting the encirclement wall of the plug with compatible supply voltage like this.

For example, as illustrating among Figure 30 C, can form step-like dimple 23c by one in four angles of cutting away this insertion groove 23.As illustrating among Figure 30 D, can cut away this insertion groove 23 by part and be formed on the outwards outstanding projection 23d in side.In such cases, the encirclement wall 53 of plug 1C through form with have the shape identical with inserting groove 23 (as on the fore-and-aft direction in the plane graph of rear side finding).

Although be formed at according to second to the 4th embodiment sloping portion 23a and insert under the groove 23 in the side, it can be formed at and insert on the groove 23 in the side.

Although be arranged in heart C1 top among the plug receiving portion 24 according to end parts 25a under second to the 4th embodiment pin patchhole 25, the position of end portion 25a is not limited thereto.If prevent that when the user attempts oppositely to be inserted into plug 1C in the socket 1 plug base pin 52 is inserted in the pin patchhole 25, then be fully feasible like this.End parts 25a can be formed in fact in the position identical with center C 1 under this meaning pin patchhole 25.

Although insert groove 23 through forming the general rectangular shape that extend in the horizontal direction on long limit and minor face extends in vertical direction according to second to the 4th embodiment, the shape of inserting groove 23 is not limited thereto.Insertion groove 23 can form has the equal in fact horizontal sides and the square shape of vertical edges.

Although according to second to the 4th embodiment pin patchhole 25 is that two patchholes by two plug base pins 52 that insert plug 1C form, the structure of pin patchhole 25 is not limited thereto.As illustrating among Figure 31 A, pin patchhole 25 can comprise two supply of electric power pin patchhole 25A of two supply of electric power pins that insert plug 1C and insert a grounding pin patchhole 25B of one of plug 1C grounding pin.As illustrating among Figure 31 B, that supply of electric power pin patchhole 25A and grounding pin patchhole 25B form respectively is round-shaped (as on the fore-and-aft direction in the plane graph of front side finding).

Between grounding pin patchhole 25B is formed at center C 1 below in vertical direction and is formed among the plug receiving portion 24 in the horizontal direction in the position.This distance between supply pin patchhole 25A and the grounding pin patchhole 25B that makes it possible to increase electric power, and therefore strengthen the dielectric strength that is inserted into the plug base pin among patchhole 25A and the 25B.

Although through forming to have the size that drops in the single module size, the size of socket 1 is not limited thereto according to second to the 4th embodiment socket 1.For example, socket 1 can form the size that drops in a half module size, two module size or the three module size.

Although according among the second embodiment electric wire Wdc each is to be clamped by each and the head 81a of screw component 81 among the terminal 2D, the invention is not restricted to this.For example; Arcuate shape or annular shape (comprise polygon annular shape (such as; The rectangular loop shape) and circular shape) metal washer can be connected to the axle 81b of screw component 81, make among the electric wire Wdc each to clamp by each and metal washer among the terminal 2D.

In the 3rd embodiment, can metal washer be connected to the axle 81b of screw component 81 equally, make among the electric wire Wdc each to clamp by each and metal washer among the terminal 2D.In the 4th embodiment; Equally can with arcuate shape or annular shape (comprise polygon annular shape (such as; The rectangular loop shape) and circular shape) fixture be connected to the end portion of the axle 81b of screw component 81 with engage thread, make among the electric wire Wdc each to clamp by each and fixture among the terminal 2D.

The 5th embodiment

Next, the DC socket of the 5th embodiment according to the present invention will be described referring to Figure 32 to Figure 46.

In the present embodiment, socket 1 is for being embedded in the embedding type in the indoor article 80 (referring to Fig. 1).As the instance of indoor article 80, extensively known have a kind of flushing unit, such as the Bathroom vanity with washbowl.Said flushing unit possesses socket 1.Plug 1C such as the electric installation of drying machine, electric toothbrush and electric saver (it all is not illustrated in the accompanying drawing) is connected to socket 1 usually.

At first, will describe the structure of socket 1 and be used for socket 1 is attached to the structure of fixed frame 2 referring to Figure 32 to Figure 34.

As illustrating among Figure 32 A, socket 1 comprise the general rectangular solid shape socket 1A, be contained in interior pin female part 1B (referring to Figure 39) of socket 1A or the like.

Socket 1A comprises: the socket main body 10 (referring to Figure 35) of general rectangular solid shape, its by the resin material ejection formation to hold pin female part 1B; And covering 20, it is so that socket main body 10 can be embedded on fore-and-aft direction and cover the shape in the side after 20 and come ejection formation by resin material.

Pin female part 1B is connected to the electric wire from DC supply line Wdc extension, and DC supply line Wdc is arranged in the rear side place of the metope of building wall wall part.This guarantees that DC electric power is supplied to pin female part 1B from DC electric power supply unit 71.

Side place before fore-and-aft direction loam cake 20, setting has the socket unit 22 of general rectangular shape (in the plane graph like finding on fore-and-aft direction).The plug 1C that is used for DC electric power is connected to socket unit 22 removedly.Side place after fore-and-aft direction loam cake 20 is provided with the body storage part 27 of the general rectangular solid shape that extends back from socket unit 22 along fore-and-aft direction.On the horizontal opposed surface of body storage part 27, be provided for socket 1 is attached to the engagement lugs 28 of the fixed frame 2 (referring to Figure 33) of indoor article 80.

Socket unit 22 has and inserts groove 23, said insertion groove 23 from the positive 22a of socket unit 22 cave in backward and form the general rectangular shape (as on the fore-and-aft direction in the plane graph of front side finding).In the present embodiment, insert groove 23 in the relative angle of the bottom of its two vertical direction and horizontal direction, possess sloping portion 23a (as on the direction of insertion of plug 1C in the plane graph of (that is, on fore-and-aft direction) finding).

The shape of the insertion groove 23 of socket unit 22 changes with the supply voltage of power supply and the kind of electric current and supply of electric power circuit.In zone by the socket unit 22 that inserts groove 23 encirclements, plug receiving portion 24 is set, it has the positive 24a that flushes with the positive 22a of socket unit 22.Plug receiving portion 24 in shape corresponding to inserting groove 23, and form that two sides are vertically extended and general rectangular shape that two side along continuous straight runs extend (as on the fore-and-aft direction in the plane graph of front side finding).Two pin patchholes 25 are arranged in the plug receiving portion 24.

Pin patchhole 25 is supply of electric power pin patchhole, and it forms the through hole with round-shaped (in the plane graph like finding on fore-and-aft direction).In the present embodiment, a grounding pin patchhole 26 as another pin patchhole is set in plug receiving portion 24.As pin patchhole 25, grounding pin patchhole 26 forms the through hole with round-shaped (in the plane graph like finding on fore-and-aft direction).

As illustrating among Figure 32 B, pin patchhole 25 is arranged along reference side 24b (that is, the upside of the outer peripheral edge that the along continuous straight runs of plug receiving portion 24 extends).In the pin patchhole 25 each is arranged in the eccentric position, and said eccentric position is nearer than side 24c under plug receiving portion 24 apart from reference side 24b.In other words, pin patchhole 25 is arranged among the plug receiving portion 24 side place on the heart C1 (the wherein intersection point of two diagonal at four angles of this center C 1 expression attachment plug receiving portion 24 (that is, single-point line)).

Pin patchhole 25 is arranged in the opposite sides of center C 1 along continuous straight runs.In detail, pin patchhole 25 in vertical direction under the plug receiving portion 24 the end portion 25a of side 24c be arranged in reference side 24b and in the horizontal direction between the straight line L1 (double dot dash line) of extend past center C 1.

Grounding pin patchhole 26 is formed under the pin patchhole 25 the side place and in vertical direction below center C 1.In addition, grounding pin patchhole 26 is formed in the horizontal centre position between the pin patchhole 25, that is, in the horizontal direction in the horizontal level identical with center C 1.In detail, the upper part 26a towards the reference side 24b of plug receiving portion 24 of grounding pin patchhole 26 is arranged under the plug receiving portion 24 between the side 24c and straight line L1.

The horizontal width H1 of general rectangular plug receiving portion 24 vertically is constant in fact in the zone that sloping portion 23a does not exist.Therefore, even pin patchhole 25 is arranged at center C 1 top in vertical direction, also can prevent the minimizing of the distance B 1 between the pin patchhole 25.This makes it possible to prevent the problem (as illustrated among Figure 49 B) of the size increase of problem (as illustrated among Figure 49 A) that the distance B R1 between the pin patchhole 203 of socket unit 200 reduces and socket unit 200.

Because it is round-shaped that pin patchhole 25 forms, therefore compare with pin patchhole 303 illustrated in Figure 50 A and Figure 50 B, become and can reduce the vertical width of socket unit 22.Therefore, the socket unit 300 that forms the rectangular shape (like illustrated person among Figure 50 A and Figure 50 B) that extends in vertical direction on long limit with pin patchhole 303 is compared, can be arranged in pin patchhole 25 in the plug receiving portion 24 among the upside place of heart C1.Therefore, can prevent the problem that increases like the size of socket unit illustrated among Figure 50 B 300.

Because it is round-shaped that grounding pin patchhole 26 also forms, therefore compare with grounding pin patchhole 304 (referring to Figure 50 A and Figure 50 B), become and can reduce the vertical width of socket unit 22.Side place under the heart C1 among this makes it possible to be arranged in grounding pin patchhole 26 in the plug receiving portion 24, and need not to increase the size of socket unit 22.

In addition, compare with distance B R6 (referring to Figure 50 A and Figure 50 B) between the grounding pin patchhole 304, can increase the beeline between pin patchhole 25 and the grounding pin patchhole 26 with pin patchhole 303.Therefore, and compare, can increase the plug base pin 52A of plug 1C and the beeline between the ground pin pin 52B (referring to Figure 37 A and Figure 37 B) corresponding to the plug of socket unit 300.

As illustrating among Figure 33 A, the body storage part 27 of socket 1A allows body storage part 27 to be inserted into the size in the fixed frame 2 of indoor article 80 through forming to have.Fixed frame 2 constitutes the part of indoor article, and has the rectangular aperture 40 that extends in the horizontal direction on long limit.The shape of opening 40 make cover 20 body storage part 27 can from fixed frame 2 before side be embedded in the opening 40.

When side was embedded in the opening 40 before fixed frame 2, strains took place in engagement lugs 28 in body storage part 27.Under the elastic force of engagement lugs 28, fixed frame 2 is sandwiched in after the socket unit 22 between the end parts and engagement lugs 28.Therefore, as illustrating among Figure 33 B, socket 1 is embedded in the fixed frame 2 and is attached to fixed frame 2.In case be embedded in the fixed frame 2 like illustrated socket 1 among Figure 34, then only before fixed frame 2 side can see socket unit 22.

Next, will describe the electric connection structure in the cage structure and socket 1 within the socket 1 referring to Figure 35, Figure 36 A and Figure 36 B, said electric connection structure is between pin female part 1B and be used to supply between the electric wire of DC electric power.

Referring to Figure 35, socket 1 comprises pin female part 1B, and said pin female part 1B is contained in the socket 1A, and when plug 1C is inserted in the socket unit 22, is connected with plug base pin 52A and ground pin pin 52B (referring to Figure 37 A).The socket main body 10 of socket 1 has pin and shelves parts patchhole 11, and it serves as the inner space that is used to deposit pin female part 1B.

In the present embodiment, socket 1 comprise with Figure 37 A in three consistent pin female part 1B of shape of the plug 1C that illustrated.Each (it is processed by conductive metallic material) among the pin female part 1B comprises and is used for plug base pin 52A is retained on the holder part 60 of appropriate location and from terminal part 61 that holder part 60 continues to extend back.Each that is used for via the electric wire of its supply DC electric power is connected to terminal part 61.Integral type forms holder part 60 via using single kind material with terminal part 61.

Pin female part 1B serves as the terminal that is connected to the electric wire that is used to supply DC electric power.Perhaps, socket 1 can comprise the terminal (not shown) with the terminal part that is connected to electric wire to be independent of the pin female part 1B with holder part 60 through structure.In other words, but pin female part 1B and said terminal integral type or form independently just can as long as holder part 60 is electrically connected to each other with terminal part 61.

In the present embodiment, as illustrating among Figure 36 A, be exposed to outside the socket main body 10 as the terminal part 61 of the pin female part 1B of terminal.In other words, the through hole 12 consistent with the shape of terminal part 61 is formed on the back side of socket main body 10, makes that the terminal part 61 of pin female part 1B can be outstanding backward via through hole 12 from socket main body 10.

The electric wire that extends with supply DC electric power from DC supply line Wdc is connected to the terminal part 61 that is exposed to socket main body 10 outsides by welding.Terminal part 61 and electric wire can replace solder and are connected to each other by arc welding or other welding method.Can DC electric power be supplied to pin female part 1B from electric wire by coupling a wire to terminal part 61 in this way.

Next, describe the structure of plug 1C referring to Figure 37 to Figure 39 and be used for plug 1C is inserted into the structure of socket 1.

Referring to Figure 37 A, plug 1C comprises cable section 50 and is connected to the plug body 51 of cable section 50.Plug body 51 has apparent surface 51a relative with the plug receiving portion 24 (referring to Figure 38) of socket 1 on fore-and-aft direction.On apparent surface 51a, following each person is set: two plug base pin 52A, it is outstanding backward from apparent surface 51a; A ground pin pin 52B, it is outstanding backward from apparent surface 51a; And the encirclement wall 53 of general rectangular, it is used for externally covering plug base pin 52A and ground pin pin 52B.

Plug base pin 52A is through being provided with to give prominence to a little forward end before surpassing this encirclement wall 53.Ground pin pin 52B surrounds wall 53 through being provided with on fore-and-aft direction, to give prominence to a little forward above this.The encirclement wall 53 of plug 1C through structure to have shape corresponding to the shape of the insertion groove 23 of socket 1.

As illustrating among Figure 37 B, plug base pin 52A is arranged at the upside place (wherein these center C 2 expressions connect the intersection point of two diagonal (that is single-point is rule) at four angles of these encirclements walls 53) that surrounds heart C2 among the wall 53.Plug base pin 52A is arranged in the opposite sides of center C 2 along continuous straight runs.In detail, end parts 52a is arranged in above the straight line L2 (double dot dash line) of this center C 2 of extend past on the horizontal direction under the plug base pin 52A.

Ground pin pin 52B is arranged at the downside place (wherein these center C 2 expressions connect the intersection point of two diagonal (that is single-point is rule) at four angles of these encirclements walls 53) that surrounds heart C2 among the wall 53.Ground pin pin 52B is arranged in the horizontal centre position (that is, in the horizontal level identical with center C 2).In detail, end parts 52b is arranged in below the straight line L2 (double dot dash line) of this center C 2 of extend past on the horizontal direction on the ground pin pin 52B.

When in like Figure 38, illustrating plug 1C and being engaged to socket 1, the encirclement wall 53 of plug body 51 is inserted in the insertion groove 23 of socket unit 22.At this moment, plug base pin 52A is inserted in the pin patchhole 25, and ground pin pin 52B is inserted in the grounding pin patchhole 26.

In accordance with in the convention socket unit 110 of IEC standard,, insert groove 111 and surround wall 102 round-shaped through forming (in plane graph) like finding on fore-and-aft direction to have as illustrating among Figure 49 A and Figure 49 B.The encirclement wall 102 of this meaning plug 100 can be inserted on 360 degree of circumferencial direction and insert in the groove 111.

Yet, in the present embodiment, this insertion groove 23 and surround wall 53 have substantially square shape (or general rectangular shape) (as on the fore-and-aft direction in the plane graph of front side finding).This this encirclement wall 53 of meaning is limited to both direction with respect to the direction of insertion of inserting groove 23.Make the user can be easy to determine that plug 1C is inserted into the direction in the socket 1 by limiting the direction of insertion of plug 1C in this way, becoming with respect to socket 1.Therefore, the user can be easy to plug 1C is inserted in the socket 1, avoids reverse insertion simultaneously.

Referring to Figure 39 A, pin female part 1B is arranged in the pin patchhole 25.In like Figure 39 B illustrated as plug 1C when being inserted in the socket 1, the plug base pin 52A of plug 1C keeps being clamped by the pin female part 1B of socket 1.At this moment, strain takes place by its elastic force plug base pin 52A is retained on the appropriate location in holder part 60.Therefore, socket 1 and plug 1C get into conduction state.Although do not illustrate among Figure 39 A and Figure 39 B, ground pin pin 52B is electrically connected to socket 1 in a similar manner.

, the user plug 1C oppositely is inserted under the situation in the socket 1 as illustrated in attempting like Figure 40; The plug base pin 52A of plug 1C is positioned heart C1 below among the plug receiving portion 24 in vertical direction, and ground pin pin 52B is positioned heart C1 top among the plug receiving portion 24 in vertical direction.Therefore, plug base pin 52A and ground pin pin 52B will contact with the positive 24a of plug receiving portion 24, make by this and can not plug 1C be inserted in the socket 1.

Under this state, pin patchhole 25 is spaced apart from each other with plug base pin 52A in vertical direction, and grounding pin patchhole 26 also is spaced apart from each other with ground pin pin 52B in vertical direction.This prevents that reliably plug base pin 52A is inserted into unintentionally in the pin patchhole 25.

Next, the shape of the socket unit 22 that changes with supply voltage will be described referring to Figure 41 A to Figure 41 D.

The shape of socket unit 22 can change as follows.The supply voltage of variety classes (for example, 6V, 12V, 24V and 48V) is used for the electric installation 72 operated with from the electric power of DC electric power supply unit 71 supplies.Therefore, becoming can be by at least one the shape in four angles that change this insertion groove 23 and plug receiving portion 24 (that is, the cardinal principle rectangle part of socket unit 22) to distinguish socket unit 22 according to supplying voltage.

If supply voltage is 6V, then as illustrating among Figure 41 A, a sloping portion 23a is formed in the lower right corner in four angles of inserting groove 23.If supply voltage is 12V, then as illustrating among Figure 41 B, a sloping portion 23a is formed in the lower left corner in four angles of inserting groove 23.If supply voltage is 48V, then as illustrating among Figure 41 C, two sloping portion 23a are formed in the lower left corner and the lower right corner in four angles of inserting groove 23.If supply voltage is 24V, then as illustrating among Figure 41 D, no sloping portion is formed in the arbitrary angle in four angles of inserting groove 23.

In the socket 1 of present embodiment, sloping portion 23a is formed in the inferior horn in four angles of inserting groove 23.Because this characteristic is compared with the structure of the comparison socket unit 400 that is illustrated among Figure 19, the distance between sloping portion 23a and the pin patchhole 25 becomes big.Therefore, compare, can prevent that the intensity of plug receiving portion 24 from reducing with the structure of convention socket unit 400.

Owing to the overall shape of the encirclement wall 53 of plug 1C is looked supply voltage and changed, so the user can upwards confirm the matched position of plug 1C with respect to socket unit 22 at the place, front side with vision at rear before the plug 1C.This makes that the user can be easy to plug 1C is inserted in the socket unit 22.

Next, the shape of the socket unit 22 that becomes with the kind as the supply of electric power circuit (not shown) of power supply will be described referring to Figure 42 A and Figure 42 B.The supply of electric power circuit is arranged between DC electric power supply unit 71 and the socket 1 and (for example) is installed in distribution panelboard 74.

The supply of electric power circuit comprises at least two kinds of circuit, that is, ELV circuit (ELV) and safety extra low voltage circuit (SELV).ELV and SELV specify among the IEC60950-1 in the IEC standard and the IEC60335-1 respectively.

Electric installation 72 (such as, household electrical device and fellow thereof) have different built-in electrical insulation structures, this looks which person among use ELV and the SELV and decides.More specifically say it, the electric installation 72 with ELV uses double insulating structure or reinforced insulation system, and this means that said insulation system is extremely strict.On the contrary, situation is not used double insulating structure or reinforced insulation system for the electric installation 72 with SELV sometimes.Therefore, it is simpler than the insulation system of the electric installation with ELV 72 to have the insulation system of electric installation 72 of SELV.

Be connected at the electric installation with ELV 72 under the situation of the socket 1 that is used for SELV, can not go wrong.This is because the insulation system of electric installation 72 is extremely strict.On the contrary, be connected to the socket 1 that is used for ELV if having the electric installation 72 of SELV, situation about then occurring usually is that electric installation 72 can break down when being supplied the high voltage of danger.This insulation system because of electric installation 72 is simplification.Therefore, need distinguish whether socket 1 and plug 1C be compatible with ELV or SELV.In detail, must prevent that the electric installation 72 with SELV is connected to the socket 1 that is used for ELV unintentionally.

Given this, as illustrating among Figure 42 A, the socket unit 22 that is used for SELV comprises the extending flute 23b that is formed at the left lower extension of inserting groove 23.Extension extends upward extending flute 23b under the groove 23 to insert certainly with inserting groove 23 combinations and warp formation.On the contrary, as illustrating among Figure 42 B, the socket unit 22 that is used for ELV is structures of omitting extending flute 23b.This alteration of form of socket unit 22 is unimportant.Therefore, the user can distinguish socket unit 22 that is used for SELV and the socket unit 22 that is used for ELV.

In the socket unit that shape changes with the kind of supply of electric power circuit, can expect using following structure (first structure), wherein, as illustrating among Figure 47 A, extending flute 23b is independent of insertion groove 23 and forms.In addition, can expect using following structure (second structure), wherein, as illustrating among Figure 47 B, extending flute 23b is formed at and inserts groove 23 outsides, that is plug receiving portion 24 outsides.

Yet, the problem that first structure suffers a kind of shortening because of the distance between this extending flute 23b and the pin patchhole 25 that the intensity of plug receiving portion 24 is reduced.Although second structure does not have intensity to reduce problem, it causes that a kind of size of socket unit 22 that makes owing to the setting of this extending flute 23b becomes big problem.

If this extending flute 23b makes up in its downside with inserting groove 23, then compare with first structure, can increase the distance between this pin patchhole 25 and this extending flute 23b.In addition, if this extending flute 23b extension under this insertions groove 23 extends upward (that is, as if extending flute 23b be formed in the plug receiving portion 24), then can prevent any increase of the size of socket unit 22.Therefore, can solve the problem that in first structure and second of preceding text statement is constructed, causes by this extending flute 23b and this being inserted the formation of groove 23 integral types, becoming.

The socket 1 of present embodiment can provide following advantageous effects.

(1) the insertion groove 23 of socket unit 22 is through constructing to have the general rectangular shape.Therefore, compare with the insertion groove 111 of the tubular shape that is illustrated among Figure 48, the encirclement wall 53 that can limit plug 1C is inserted into the direction of inserting in the groove 23.This makes the user can be easy to conclude that plug 1C is inserted into the direction of wanting in the socket unit 22, improves ease by this.Therefore, the user can be easy to plug 1C is inserted in the socket 1, avoids reverse insertion simultaneously.

(2) by coupling a wire to and DC is supplied power to pin female part 1B from electric wire as the terminal part 61 that is exposed to socket main body 10 outsides of the pin female part 1B of terminal.If electric wire is the terminal part 61 that is exposed to socket main body 10 outsides that is connected to pin female part 1B by welding or soldering, then can carry out the electric connection between electric wire and the pin female part 1B reliably.

(3) pin female part 1B and terminal can form single part.In other words, pin female part 1B serves as terminal.Because this characteristic is compared with the situation that terminal forms independently of one another with pin female part 1B, can reduce the number of parts.

(4) end parts 25a is positioned at center C 1 top in vertical direction under the pin patchhole 25.This makes it possible to when the user attempts oppositely to be inserted into plug 1C in the socket 1, prevent that plug base pin 52A is inserted in the pin patchhole 25.Therefore, can prevent reverse insertion more reliably.

(5) sloping portion 23a is formed at and inserts in the groove 23.Surrounding wall 53 also possesses and the consistent sloping portion of shape that inserts groove 23.Because the shape of surrounding the shape of wall 53 and inserting groove 23 changes with supply voltage, can prevent that therefore plug 1C is inserted into supply voltage by error to be different from the socket 1 of supply voltage of plug 1C.

(6) sloping portion 23a is formed at and inserts under the groove 23 in the side (that is, under the plug receiving portion 24 near the side 24c).Near the structure that is formed at and inserts on the groove 23 in the side (that is, the reference side 24b of plug receiving portion 24) with sloping portion is compared, and this makes it possible to increase the distance between sloping portion 23a and the plug insertion 25.Therefore, becoming to increase the intensity of plug receiving portion 24, and therefore, prevents the infringement to plug receiving portion 24 that when inserting and pulling out plug 1C, originally can take place.

(7) plug receiving portion 24 has the position corresponding to the sloping portion 23a that inserts groove 23 and shape and the consistent inclined side of sloping portion 23a of inserting groove 23.This makes it possible to prevent to insert the narrowed width of groove 23.

Do not have in the supposed situation of position corresponding to the sloping portion of the sloping portion 23a that inserts groove 23 at plug receiving portion 24, only periphery edge forms tilted shape outside this insertion groove 23.Therefore, outside the plug receiving portion 24 outside periphery edge and this insertion groove 23 between the periphery edge width in sloping portion 23a become and be narrower than the width in the zone except sloping portion 23a.In the present embodiment, the inclined side of plug receiving portion 24 becomes corresponding relation with the sloping portion 23a of this insertion groove 23 and forms.This makes it possible to solve the problem of the narrowed width of this insertion groove 23.

(8) the sloping portion 23a of this insertion groove 23 forms the tilted shape consistent with the sloping portion of plug receiving portion 24.Therefore, tilted shape is for simple and can realize by in four angles of only cutting away this insertion groove 23 and plug receiving portion 24 some.Because this characteristic, can prevent that plug 1C is inserted into supply voltage by error and is different from the structure in the socket 1 of supply voltage of plug 1C to provide than plain mode.This makes it possible to be easy to make socket 1.

(9) this extending flute 23b extended should insert groove 23 certainly through structure.The situation that is independent of this insertion groove 23 with this extending flute 23b and forms is compared, and this makes it possible to prevent that the size of this socket unit 22 from increasing and the intensity reduction of plug receiving portion 24.

(10) this extending flute 23b is formed under this insertion groove 23 in the extension.Be formed at pin patchhole 25 with extending flute and compare with the situation between this insertion groove 23, this makes it possible to increase the intensity of plug receiving portion 24.Therefore, can prevent the infringement that script can take place when inserting and pulling out plug 1C to plug receiving portion 24.

(11) the positive 22a of socket unit 22 flushes with the positive 24a of plug receiving portion 24 on fore-and-aft direction.The plug base pin 52A of plug 1C gives prominence to a little forward on fore-and-aft direction and surrounds wall 53 above this.These structures have guaranteed that when the user attempts oppositely to be inserted into plug 1C in the socket unit 22 before these encirclement wall 53 quite a lot of parts were inserted in the insertion groove 23, plug base pin 52A contacted with plug receiving portion 24.

This makes the user can clearly pick out reverse insert of plug 1C to the socket unit 22.When plug 1C oppositely is inserted in the socket unit 22, no longer can plug 1C be held in and be attached to socket unit 22.This has eliminated and has made plug 1C keep oppositely being inserted into the possibility in the socket unit 22.

(12) plug receiving portion 24 possesses a grounding pin patchhole 26 that is inserted with ground pin pin 52B.Grounding pin patchhole 26 has round-shaped (in the plane graph like finding on the direction of insertion of plug 1C).Because this characteristic, socket 1 is and plug 1C with ground pin pin 52B and plug (not shown) compatibility that do not have the ground pin pin.

The warp of the 5th embodiment is revised instance

The socket 1 of the 5th embodiment is not limited to foregoing, but can revise as follows.Following is not to be only applicable to the 5th embodiment through revising instance, but mode that can combination with one another is specialized.

This extending flute 23b can not be formed in the plug receiving portion 24.For example, as illustrating among Figure 43 A, this extending flute 23b can be through forming so that side direction extends below under the groove 23 from inserting in vertical direction.As illustrating among Figure 43 B, this extending flute 23b can be through forming with in vertical direction from extending on the side direction on this insertion groove 23.As illustrating among Figure 43 C, this extending flute 23b can be through forming to extend left from this left side of inserting groove 23 in the horizontal direction.As illustrating among Figure 43 D, this extending flute 23b can be through forming to extend to the right from the right side of this insertion groove 23 in the horizontal direction.

Although discern according to forming sloping portion 23a in the supply voltage of the 5th embodiment socket 1 one or two angle by side under inserting groove 23, the structure that is used to discern the supply voltage of socket 1 is not limited thereto.If the alteration of form that inserts groove 23 then is fully feasible to permit inserting the encirclement wall 53 of the plug 1C with compatible supply voltage like this.

For example, as illustrating among Figure 44 A, can form step-like dimple 23c by one in four angles of cutting away this insertion groove 23.As illustrating among Figure 44 B, can cut away this insertion groove 23 by part and be formed on the outwards outstanding projection 23d in side.In such cases, the encirclement wall 53 of plug 1C through form with have the shape identical with this insertions groove 23 (as on the fore-and-aft direction in the plane graph of front side finding).One of replace cutting away in four angles of this insertions groove 23 person to form dimple 23c, shown in Figure 44 C and Figure 44 D, can be under inserting groove 23 this extending flute of formation 23b in right-hand member or the left end portion of extension.

Although be formed under this insertion groove 23 in the side according to the 5th embodiment sloping portion 23a and this extending flute 23b, the position of this extending flute 23b is not limited thereto.For example, sloping portion 23a and this extending flute 23b can be formed on this insertion groove 23 in the side.

Although be arranged in heart C1 top among the plug receiving portion 24 according to end parts 25a under the 5th embodiment pin patchhole 25, the position of end portion 25a is not limited thereto.When the user attempts oppositely to be inserted into plug 1C in the socket 1,, then be fully feasible like this if prevented that plug base pin 52A is inserted in the pin patchhole 25.End parts 25a can be formed in fact in the upright position identical with center C 1 under this meaning pin patchhole 25.

Although possess grounding pin patchhole 26 according to the 5th embodiment plug receiving portion 24, the present invention is applicable to as illustrating not the socket 1 that in plug receiving portion 24, forms grounding pin patchhole 26 among Figure 45.

Socket 1A can form in accordance with Japanese Industrial Standards and drop on the single module size of three modules nearly, the size in half module size, two module size or the three module size, and said three modules can be attached to the fixed frame of the interchangeable connecton layout of a kind of big square hub type shoulder to shoulder.This structure makes it possible to socket 1A is attached to the fixed frame (not shown) that other is equal to the connecton layout of ground standardization.Therefore, need not to make in addition the fixed frame that is exclusively used in socket 1A, the ease that this helps to make the fixed frame standardization and strengthens socket 1.

Although should insert groove 23 through forming the general rectangular shape that extend in the horizontal direction on long limit and minor face extends in vertical direction according to the 5th embodiment, the shape of this insertion groove 23 is not limited thereto.This insertion groove 23 can form has the equal horizontal sides and the square shape of vertical edges.

Although illustrated and described the present invention, it will be understood by those skilled in the art that under the situation of the scope of the invention that does not break away from the accompanying claims qualification and can make various changes and modification with reference to embodiment.

Claims

1. a direct current (DC) socket, plug are suitable for being connected to said direct current socket to give said plug with the DC supply of electric power, and said plug comprises a plurality of plug base pins with circular bar shape; And be used to surround the encirclement wall of the quadrangle form in fact of said plug base pin, said DC socket comprises:

Socket main body, it has the socket unit that said plug is suitable for connecting, and said socket unit is arranged in the front of said socket main body,

Wherein said socket unit comprises: insert groove, it forms and on the direction of insertion of said plug, is the general rectangular shape in the being seen plane graph, and said encirclement wall is suitable for inserting in the said insertion groove; And the plug receiving portion, it is surrounded and is formed by said insertion groove and on the said direction of insertion of said plug, is the general rectangular shape in the being seen plane graph,

Said plug receiving portion comprises a plurality of circular pin patchholes, and its reference side along the side in the perimeter sides of serving as said plug receiving portion arranges that the said plug base pin of said plug is suitable for inserting said pin and inserts in the hole, and

Comprise in the said socket main body: the pin female part, it is connected to and inserts the said plug base pin that said pin inserts in the hole; Terminal, it is electrically connected to said pin female part; And the locking spring, it is suitable for the electric wire that is used to supply DC electric power is pressed in said terminal, and said electric wire inserts via being arranged at the electric wire insertion holes on the said socket main body.

2. a direct current (DC) socket, plug are suitable for being connected to said direct current socket to give said plug with the DC supply of electric power, and said plug comprises a plurality of plug base pins with circular bar shape; And be used to surround the encirclement wall of the quadrangle form in fact of said plug base pin, said DC socket comprises:

Socket main body, it has the socket unit that makes said plug be suitable for connecting, and said socket unit is arranged in the front of said socket main body,

Said plug receiving portion comprises a plurality of circular pin patchholes, and its reference side along the side in the perimeter sides of serving as said plug receiving portion arranges that the said plug base pin of said plug is suitable for inserting said pin and inserts in the hole,

Comprise in the said socket main body: the pin female part, it is connected to and inserts the said plug base pin that said pin inserts in the hole; Terminal, it is electrically connected to said pin female part; And screw component, it is installed on said terminal place, and when tightening, is suitable for the electric wire that is used to supply DC electric power is pressed in said terminal, and said electric wire inserts via being arranged at the electric wire insertion holes on the said socket main body.

3. DC socket as claimed in claim 2, each in the wherein said terminal possesses through hole; And each in the said screw component comprises head and axle; Said axle is from said head extension and be threaded io said socket main body; And when said screw component was fixed to said through hole by tightening, said screw component was pressed in the said electric wire each on each in the said terminal by the end face opposite with said head of said axle.

4. DC socket as claimed in claim 2; The axle that in the wherein said screw component each comprises head and extends from said head; And also comprise the fixture that is arranged in the said socket main body and is threaded io the said axle of said screw component; Possesses through hole between in the said terminal each each in said head and said fixture; Said beam warp is inserted by said through hole, and in the said fixture each is arranged to when said screw component tightens each in the said terminal and moves so that in the said electric wire each is pressed on each in the said terminal.

5. a direct current (DC) socket, plug are suitable for being connected to said direct current socket to give said plug with the DC supply of electric power, and said plug comprises a plurality of plug base pins with circular bar shape; And be used to surround the encirclement wall of the quadrangle form in fact of said plug base pin, said DC socket comprises:

Comprise in the said socket main body: the pin female part, it is connected to and inserts the said plug base pin that said pin inserts in the hole; Terminal, it is electrically connected to said pin female part and part is exposed to the socket main body outside.

6. like each described DC socket of claim 1 to 5, at least one shape when its front is watched in wherein said plug receiving portion and the said insertion groove partly changes according to the kind of supplying voltage or supply of current.

7. DC socket as claimed in claim 6; The said shape of wherein said insertion groove when the front is watched is changed; Make that when the front is watched, having in fact the situation of quadrangle form with said plug receiving portion compares, the area of said plug receiving portion reduces.

8. DC socket as claimed in claim 7; The said shape of wherein said insertion groove when the front is watched changes according to the said kind of said supply voltage or said supply of current differently, and said change is by at least one angle of the said quadrangle form in fact that cuts said plug receiving portion according to the said kind of said supply voltage or said supply of current and forms said insertion groove along the neighboring of said plug receiving portion and carry out.

9. DC socket as claimed in claim 6, wherein the part of the said insertion groove that changes according to the said kind of said supply voltage or said supply of current of shape apart from the opposite side of said reference side than nearer apart from said reference side.

10. DC socket as claimed in claim 6; The said shape of wherein said insertion groove when the front is watched is changed; Make and to compare that the area of said plug receiving portion increases with said plug receiving portion has a said quadrangle form in fact when the front is watched situation.

11. like claim 6 or 8 described DC sockets, the said shape of wherein said insertion groove when the front is watched is to come partly to change by forming the extending flute that extends from said insertion groove.

12. DC socket as claimed in claim 11, wherein said extending flute are to extend in the said plug receiving portion by a part that makes said insertion groove to form.

13. it is nearer than the said reference side of distance that DC socket as claimed in claim 11, wherein said extending flute are arranged to apart from the said opposite side of the said reference side of said plug receiving portion.

14. DC socket as claimed in claim 11, wherein said extending flute stretches out by a part that makes said insertion groove and is formed on the said front of said socket main body.

15. like each described DC socket of claim 1 to 5, the shape of at least one of wherein said plug receiving portion and said insertion groove when its front is watched partly changes according to the kind of the supply of electric power circuit that serves as the supply of electric power source.

16. DC socket as claimed in claim 15; The said shape of wherein said insertion groove when the front is watched is changed; Make and to compare that the area of said plug receiving portion reduces with said plug receiving portion has a said quadrangle form in fact when the front is watched situation.

17. DC socket as claimed in claim 16; The said shape of wherein said insertion groove when the front is watched changes according to the said kind of said supply of electric power circuit differently, and said change is by at least one angle of cutting the said in fact quadrangle form of said plug receiving portion when the front is watched according to the said kind of said supply of electric power circuit and forms said insertion groove along the neighboring of said plug receiving portion and carry out.

18. DC socket as claimed in claim 15, wherein the part of the said insertion groove that changes according to the said kind of said supply of electric power circuit of shape apart from the said opposite side of said reference side than nearer apart from said reference side.

19. DC socket as claimed in claim 15; The said shape of wherein said insertion groove when the front is watched is changed; Make and to compare that the area of said plug receiving portion increases with said plug receiving portion has a said quadrangle form in fact when the front is watched situation.

20. like claim 15 or 17 described DC sockets, the said shape of wherein said insertion groove when the front is watched is to come partly to change by forming the extending flute that extends from said insertion groove.

21. DC socket as claimed in claim 20, wherein said extending flute are to extend in the said plug receiving portion by a part that makes said insertion groove to form.

22. it is nearer than the said reference side of distance that DC socket as claimed in claim 20, wherein said extending flute are arranged to apart from the said opposite side of the said reference side of said plug receiving portion.

23. DC socket as claimed in claim 20, wherein said extending flute stretches out by a part that makes said insertion groove and is formed on the said front of said socket main body.

24. like each described DC socket of claim 1 to 5, the said shape of wherein said insertion groove when the front is watched only just partly changes when said supply of electric power circuit is safety extra low voltage (SELV) circuit.

25. like each described DC socket of claim 1 to 5, the said plug base pin of wherein said plug comprises grounding pin, and the said pin patchhole of said plug receiving portion comprises the grounding pin patchhole of the said grounding pin that inserts said plug.

26. DC socket as claimed in claim 25, wherein said grounding pin patchhole are departed from the said opposite side of being arranged to more near said reference side.